fix(ci): stop e2e workflows triggering on docs-only changes (tldraw#8902)

In order to stop the dotcom, examples, and perf e2e workflows from
running on PRs that don't touch their dependencies (for example,
docs-only PRs or markdown-only changes inside `packages/`), this PR
splits each workflow's relevance check into two `dorny/paths-filter`
steps and ANDs the results in the job's `outputs:` expression.

Closes tldraw#8878

### Why the previous filter misbehaved

`dorny/paths-filter@v3` defaults to `predicate-quantifier: some`, so the
filter returns `true` if **any** listed pattern matches. Under that
quantifier, a negation like `!**/*.md` matches every file that isn't a
`.md` — including `.mdx` files. A docs-only change to
`apps/docs/content/releases/next.mdx` therefore matched `!**/*.md` and
tripped the filter, even though no positive include matched it.

### Why one filter isn't enough

`dorny/paths-filter` only supports `predicate-quantifier: some | every`
(it's a per-step option, not per-filter). Under `every`, every listed
pattern must match for a file to count, which doesn't combine with
multiple positive includes like `packages/**` **or** `apps/dotcom/**` —
no single file is in both. So we use two steps and combine.

### How the new check works

Per workflow:

- `includes` (default `some`): true if any changed file is in a relevant
path (`packages/**`, `apps/dotcom/**` or `apps/examples/**`, the
workflow file itself, `.github/actions/**`, `yarn.lock`).
- `nondocs` (`predicate-quantifier: 'every'` with `['**', '!**/*.md',
'!**/*.mdx']`): a file is included only if it matches `**` and is not
`.md` and not `.mdx`, so the filter is true iff at least one
non-markdown file changed.

`relevant = includes && nondocs`, evaluated in the job's `outputs:`
expression. Behavior:

| PR contents | `includes` | `nondocs` | `relevant` |
| --- | --- | --- | --- |
| `apps/docs/content/foo.mdx` only | false | false | **false** (skip) |
| `packages/foo/README.md` only | true | false | **false** (skip) |
| `packages/foo/src/index.ts` only | true | true | **true** (run) |
| `packages/foo/src/index.ts` + `apps/docs/foo.mdx` | true | true |
**true** (run, code change wins) |

### Change type

- [x] `other`

### Test plan

1. Open a PR that only changes `apps/docs/content/releases/next.mdx`.
Confirm each of `End to end tests (dotcom)`, `End to end tests
(examples)`, and `End to end tests (perf)` reports both filter steps and
resolves `relevant = false`, and the matching `build` job is skipped.
2. Open a PR that only changes a `packages/**/README.md`. Confirm the
same three workflows skip the `build` job (`includes = true`, `nondocs =
false`).
3. Open a PR that changes a relevant code file (e.g. anything under
`packages/<x>/src/`, `apps/dotcom/`, `apps/examples/`, the workflow
file, `.github/actions/`, or `yarn.lock`). Confirm the corresponding e2e
workflow still runs.
4. Open a PR that mixes a code change with a docs/markdown change.
Confirm the workflow still runs (the code change satisfies `nondocs`).

### Release notes

- Internal CI fix; no user-facing changes.

Author: mimecuvalo

.github/workflows/playwright-dotcom.yml

@@ -21,22 +21,31 @@ jobs:
     runs-on: ubuntu-latest
     if: ${{ github.event.pull_request.head.repo.fork == false }}
     outputs:
-      relevant: ${{ steps.filter.outputs.relevant }}
+      relevant: ${{ steps.includes.outputs.match == 'true' && steps.nondocs.outputs.match == 'true' }}
     steps:
       - name: Check out code
         uses: actions/checkout@v6
 
-      - name: Check for relevant changes
+      - name: Check for changes to relevant paths
         uses: dorny/paths-filter@v3
-        id: filter
+        id: includes
         with:
           filters: |
-            relevant:
+            match:
               - 'packages/**'
               - 'apps/dotcom/**'
               - '.github/workflows/playwright-dotcom.yml'
               - '.github/actions/**'
               - 'yarn.lock'
+
+      - name: Check for any non-doc changes
+        uses: dorny/paths-filter@v3
+        id: nondocs
+        with:
+          predicate-quantifier: 'every'
+          filters: |
+            match:
+              - '**'
               - '!**/*.md'
               - '!**/*.mdx'
 

.github/workflows/playwright-examples.yml

@@ -19,22 +19,31 @@ jobs:
     name: 'Check for relevant changes'
     runs-on: ubuntu-latest
     outputs:
-      relevant: ${{ steps.filter.outputs.relevant }}
+      relevant: ${{ steps.includes.outputs.match == 'true' && steps.nondocs.outputs.match == 'true' }}
     steps:
       - name: Check out code
         uses: actions/checkout@v6
 
-      - name: Check for relevant changes
+      - name: Check for changes to relevant paths
         uses: dorny/paths-filter@v3
-        id: filter
+        id: includes
         with:
           filters: |
-            relevant:
+            match:
               - 'packages/**'
               - 'apps/examples/**'
               - '.github/workflows/playwright-examples.yml'
               - '.github/actions/**'
               - 'yarn.lock'
+
+      - name: Check for any non-doc changes
+        uses: dorny/paths-filter@v3
+        id: nondocs
+        with:
+          predicate-quantifier: 'every'
+          filters: |
+            match:
+              - '**'
               - '!**/*.md'
               - '!**/*.mdx'
 

.github/workflows/playwright-perf.yml

@@ -19,22 +19,31 @@ jobs:
     name: 'Check for relevant changes'
     runs-on: ubuntu-latest
     outputs:
-      relevant: ${{ steps.filter.outputs.relevant }}
+      relevant: ${{ steps.includes.outputs.match == 'true' && steps.nondocs.outputs.match == 'true' }}
     steps:
       - name: Check out code
         uses: actions/checkout@v6
 
-      - name: Check for relevant changes
+      - name: Check for changes to relevant paths
         uses: dorny/paths-filter@v3
-        id: filter
+        id: includes
         with:
           filters: |
-            relevant:
+            match:
               - 'packages/**'
               - 'apps/examples/**'
               - '.github/workflows/playwright-perf.yml'
               - '.github/actions/**'
               - 'yarn.lock'
+
+      - name: Check for any non-doc changes
+        uses: dorny/paths-filter@v3
+        id: nondocs
+        with:
+          predicate-quantifier: 'every'
+          filters: |
+            match:
+              - '**'
               - '!**/*.md'
               - '!**/*.mdx'