ci: switch bundle size action to preactjs/compressed-size-action

andresz1/size-limit-action checks out the base branch and runs
size-limit there, but size-limit isn't in master's package.json yet,
causing npx to fail with no JSON output.

preactjs/compressed-size-action measures built artifact sizes directly
without requiring size-limit on the base branch — same approach used
by react-hook-form.

Author: iamdarshshah

.github/workflows/size.yml

@@ -17,8 +17,11 @@ jobs:
       - name: Install dependencies
         run: yarn install --frozen-lockfile
 
-      # Posts a PR comment showing the brotli size diff vs the base branch.
-      # Fails CI if either artifact exceeds the limit defined in package.json "size-limit".
-      - uses: andresz1/size-limit-action@v1
+      # Posts a PR comment showing the gzip size diff vs the base branch.
+      # Does not require size-limit to be installed on the base branch —
+      # measures the built artifact sizes directly.
+      - uses: preactjs/compressed-size-action@v2
         with:
-          github_token: ${{ secrets.GITHUB_TOKEN }}
+          repo-token: '${{ secrets.GITHUB_TOKEN }}'
+          pattern: 'dist/{index.es.js,index.js}'
+          build-script: 'build'