[ci] Also cache playground playwright browsers (facebook#32687)

Following facebook#32678, do the same for the playground e2e test since this
step can sometimes take many minutes to complete.

Author: poteto

.github/workflows/compiler_playground.yml

@@ -40,7 +40,19 @@ jobs:
             **/node_modules
           key: compiler-node_modules-v6-${{ runner.arch }}-${{ runner.os }}-${{ hashFiles('compiler/**/yarn.lock') }}
       - run: yarn install --frozen-lockfile
+      - name: Check Playwright version
+        id: playwright_version
+        run: echo "playwright_version=$(npm ls @playwright/test | grep @playwright | sed 's/.*@//' | head -1)" >> "$GITHUB_OUTPUT"
+      - name: Cache Playwright Browsers for version ${{ steps.playwright_version.outputs.playwright_version }}
+        id: cache_playwright_browsers
+        uses: actions/cache@v4
+        with:
+          path: ~/.cache/ms-playwright
+          key: playwright-browsers-v6-${{ runner.arch }}-${{ runner.os }}-${{ steps.playwright_version.outputs.playwright_version }}
       - run: npx playwright install --with-deps chromium
+        if: steps.cache_playwright_browsers.outputs.cache-hit != 'true'
+      - run: npx playwright install-deps
+        if: steps.cache_playwright_browsers.outputs.cache-hit == 'true'
       - run: CI=true yarn test
       - run: ls -R test-results
         if: '!cancelled()'

.github/workflows/runtime_build_and_test.yml

@@ -599,13 +599,10 @@ jobs:
         if: steps.node_modules.outputs.cache-hit != 'true'
       - run: yarn --cwd fixtures/flight install --frozen-lockfile
         if: steps.node_modules.outputs.cache-hit != 'true'
-      - name: Store Playwright version
+      - name: Check Playwright version
         id: playwright_version
-        run: |
-          PLAYWRIGHT_VERSION=$(npm ls @playwright/test | grep @playwright | sed 's/.*@//')
-          echo "Playwright's Version: $PLAYWRIGHT_VERSION"
-          echo "playwright_version=$PLAYWRIGHT_VERSION" >> "$GITHUB_OUTPUT"
-      - name: Cache Playwright Browsers for Playwright's Version
+        run: echo "playwright_version=$(npm ls @playwright/test | grep @playwright | sed 's/.*@//' | head -1)" >> "$GITHUB_OUTPUT"
+      - name: Cache Playwright Browsers for version ${{ steps.playwright_version.outputs.playwright_version }}
         id: cache_playwright_browsers
         uses: actions/cache@v4
         with: