chore: fix broken tsconfig.eslint.json include paths across monorepo (#1249)

**Requirements**

- [x] I have added test coverage for new or changed functionality
- [x] I have followed the repository's [pull request submission
guidelines](../blob/main/CONTRIBUTING.md#submitting-pull-requests)
- [x] I have validated my changes against all supported platform
versions

> No test changes needed — this is a config-only fix. Lint was
spot-checked on `@launchdarkly/js-sdk-common`,
`@launchdarkly/js-client-sdk-common`, and `@launchdarkly/js-client-sdk`
after the change.

**Related issues**

[SDK-2137](https://launchdarkly.atlassian.net/browse/SDK-2137)

**Describe the solution you've provided**

24 `tsconfig.eslint.json` files across the monorepo used `"include":
["/**/*.ts"]` with a leading `/`. This made the glob pattern a rooted
path, causing TypeScript's `matchFiles` to build an include regex
anchored at the filesystem root (`/`) instead of relative to the project
directory. On Linux (and CI), this accidentally works because the
over-broad regex still matches project files during directory traversal.
On macOS, this causes ESLint to fail with `Parsing error: ESLint was
configured to run on <file> using parserOptions.project — however, that
TSConfig does not include this file`.

The fix removes the leading `/` from all affected include patterns,
making them relative globs (e.g., `/**/*.ts` → `**/*.ts`, `/**/*.tsx` →
`**/*.tsx`).

**Describe alternatives you've considered**

None — this is a straightforward one-character-per-pattern correction.
The 11 already-correct files in the repo (e.g., `server-node`,
`server-ai`, `react`, `contract-test-utils`) already use relative
patterns and served as the reference for the fix.

**Additional context**

**Key things for reviewers to verify:**
- The
`packages/tooling/jest/example/react-native-example/tsconfig.eslint.json`
file also had `/*.js` and `/*.tsx` patterns (not `/**/*.js`), which were
changed to `*.js` and `*.tsx` — same root-cause fix, just a different
glob shape.
- This fix was validated on Linux where both patterns resolve
identically. Ideally, a macOS spot-check of `yarn workspace <pkg> lint`
on an affected package would confirm the fix on the platform where the
bug manifests.

Link to Devin session:
https://app.devin.ai/sessions/344742d82eb748be987668f194b42bb0
Requested by: @joker23

[SDK-2137]:
https://launchdarkly.atlassian.net/browse/SDK-2137?atlOrigin=eyJpIjoiNWRkNTljNzYxNjVmNDY3MDlhMDU5Y2ZhYzA5YTRkZjUiLCJwIjoiZ2l0aHViLWNvbS1KU1cifQ

<!-- CURSOR_SUMMARY -->
---

> [!NOTE]
> **Low Risk**
> Low risk config-only change that adjusts TypeScript/ESLint file
include globs; main risk is unintentionally widening or narrowing linted
file sets in affected packages.
> 
> **Overview**
> Fixes broken `tsconfig.eslint.json` `include` patterns across the
monorepo by removing leading `/` so globs are resolved relative to each
package (e.g. `/**/*.ts` → `**/*.ts`, similarly for `tsx`/`js`).
> 
> This should prevent ESLint `parserOptions.project` parsing errors on
platforms where rooted include globs fail to match project files
(notably macOS), and slightly normalizes include behavior in the Jest
react-native example (`/*.js` → `*.js`).
> 
> <sup>Reviewed by [Cursor Bugbot](https://cursor.com/bugbot) for commit
ad9cc96. Bugbot is set up for automated
code reviews on this repo. Configure
[here](https://www.cursor.com/dashboard/bugbot).</sup>
<!-- /CURSOR_SUMMARY -->

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Co-authored-by: Devin AI <158243242+devin-ai-integration[bot]@users.noreply.github.com>

Author: joker23

packages/sdk/akamai-base/tsconfig.eslint.json

@@ -1,5 +1,5 @@
 {
   "extends": "./tsconfig.json",
-  "include": ["/**/*.ts"],
+  "include": ["**/*.ts"],
   "exclude": ["node_modules"]
 }

packages/sdk/akamai-edgekv/tsconfig.eslint.json

@@ -1,5 +1,5 @@
 {
   "extends": "./tsconfig.json",
-  "include": ["/**/*.ts"],
+  "include": ["**/*.ts"],
   "exclude": ["node_modules"]
 }

packages/sdk/browser/contract-tests/entity/tsconfig.eslint.json

@@ -1,5 +1,5 @@
 {
   "extends": "./tsconfig.json",
-  "include": ["/**/*.ts"],
+  "include": ["**/*.ts"],
   "exclude": ["node_modules"]
 }

packages/sdk/browser/tsconfig.eslint.json

@@ -1,5 +1,5 @@
 {
   "extends": "./tsconfig.json",
-  "include": ["/**/*.ts", "/**/*.tsx"],
+  "include": ["**/*.ts", "**/*.tsx"],
   "exclude": ["node_modules"]
 }

packages/sdk/cloudflare/tsconfig.eslint.json

@@ -1,5 +1,5 @@
 {
   "extends": "./tsconfig.json",
-  "include": ["/**/*.ts"],
+  "include": ["**/*.ts"],
   "exclude": ["node_modules"]
 }

packages/sdk/combined-browser/tsconfig.eslint.json

@@ -1,5 +1,5 @@
 {
   "extends": "./tsconfig.json",
-  "include": ["/**/*.ts", "/**/*.tsx"],
+  "include": ["**/*.ts", "**/*.tsx"],
   "exclude": ["node_modules"]
 }

packages/sdk/electron/tsconfig.eslint.json

@@ -1,5 +1,5 @@
 {
   "extends": "./tsconfig.json",
-  "include": ["/**/*.ts"],
+  "include": ["**/*.ts"],
   "exclude": ["node_modules"]
 }

packages/sdk/fastly/tsconfig.eslint.json

@@ -1,5 +1,5 @@
 {
   "extends": "./tsconfig.json",
-  "include": ["/**/*.ts"],
+  "include": ["**/*.ts"],
   "exclude": ["node_modules"]
 }

packages/sdk/react-native/tsconfig.eslint.json

@@ -1,5 +1,5 @@
 {
   "extends": "./tsconfig.json",
-  "include": ["/**/*.ts", "/**/*.tsx"],
+  "include": ["**/*.ts", "**/*.tsx"],
   "exclude": ["node_modules"]
 }

packages/sdk/shopify-oxygen/tsconfig.eslint.json

@@ -1,6 +1,6 @@
 {
   "extends": "./tsconfig.json",
-  "include": ["/**/*.ts"],
+  "include": ["**/*.ts"],
   "exclude": ["node_modules"]
 }