fix: move playwright install into NUT scripts for cross-platform support

The previous approach of chaining commands with && in the CI workflow
failed on Windows because GitHub Actions uses PowerShell which doesn't
support &&. Moving the install into yarn scripts avoids this since yarn
runs scripts through cmd.exe on Windows.

Made-with: Cursor

Author: abdulsattar

.github/workflows/test.yml

@@ -37,6 +37,6 @@ jobs:
       fail-fast: false
     with:
       os: ${{ matrix.os }}
-      command: npx playwright install --with-deps && yarn test:nuts
+      command: yarn test:nuts
       retries: 5
     secrets: inherit

package.json

@@ -106,9 +106,9 @@
     "prepack": "sf-prepack",
     "prepare": "sf-install",
     "test": "wireit",
-    "test:nuts": "mocha \"**/*.nut.ts\" --slow 30000 --timeout 600000 --parallel=false",
-    "test:nuts:local": "node -r dotenv/config ./node_modules/.bin/nyc mocha \"**/*.nut.ts\" --slow 30000 --timeout 600000 --parallel=false",
-    "test:nut:local": "node -r dotenv/config ./node_modules/.bin/nyc mocha --slow 30000 --timeout 600000",
+    "test:nuts": "npx playwright install --with-deps && mocha \"**/*.nut.ts\" --slow 30000 --timeout 600000 --parallel=false",
+    "test:nuts:local": "npx playwright install --with-deps && node -r dotenv/config ./node_modules/.bin/nyc mocha \"**/*.nut.ts\" --slow 30000 --timeout 600000 --parallel=false",
+    "test:nut:local": "npx playwright install --with-deps && node -r dotenv/config ./node_modules/.bin/nyc mocha --slow 30000 --timeout 600000",
     "test:only": "wireit",
     "unlink-lwr": "yarn unlink @lwrjs/api @lwrjs/app-service @lwrjs/asset-registry @lwrjs/asset-transformer @lwrjs/auth-middleware @lwrjs/base-view-provider @lwrjs/base-view-transformer @lwrjs/client-modules @lwrjs/config @lwrjs/core @lwrjs/dev-proxy-server @lwrjs/diagnostics @lwrjs/esbuild @lwrjs/everywhere @lwrjs/fs-asset-provider @lwrjs/fs-watch @lwrjs/html-view-provider @lwrjs/instrumentation @lwrjs/label-module-provider @lwrjs/lambda @lwrjs/legacy-npm-module-provider @lwrjs/loader @lwrjs/lwc-module-provider @lwrjs/lwc-ssr @lwrjs/markdown-view-provider @lwrjs/module-bundler @lwrjs/module-registry @lwrjs/npm-module-provider @lwrjs/nunjucks-view-provider @lwrjs/o11y @lwrjs/resource-registry @lwrjs/router @lwrjs/security @lwrjs/server @lwrjs/shared-utils @lwrjs/static @lwrjs/tools @lwrjs/types @lwrjs/view-registry lwr",
     "update-snapshots": "node --loader ts-node/esm --no-warnings=ExperimentalWarning \"./bin/dev.js\" snapshot:generate",