Feat: Calculate package size change on PRs

.github/workflows/e2e.yml

@@ -103,10 +103,21 @@ jobs:
           runTests: false
 
       - name: Build
-        if: ${{ github.event_name == 'pull_request' }}
+        id: size
+        if: ${{ github.event_name == 'pull_request' && matrix.containers == 1 }}
         run: |
           pnpm run build:viz
           mv stats cypress/snapshots/stats/head
+          echo "size_diff=$(npx tsx scripts/size.ts)" >> $GITHUB_OUTPUT
+
+      # Size diff only needs to be posted from one job, on PRs.
+      - name: Comment PR size difference
+        if: ${{ github.event_name == 'pull_request' && matrix.containers == 1 }}
+        uses: thollander/actions-comment-pull-request@v2
+        with:
+          message: |
+            ${{ steps.size.outputs.size_diff }}
+          comment_tag: size-diff
 
       # Install NPM dependencies, cache them correctly
       # and run all Cypress tests
@@ -164,19 +175,6 @@ jobs:
           pattern: snapshots-*
           merge-multiple: true
 
-      - name: Calculate Size difference
-        id: size
-        if: ${{ github.event_name == 'pull_request' }}
-        run: echo "::set-output name=size_diff::$(npx tsx scripts/size.ts)"
-
-      - name: Comment PR size difference
-        if: ${{ github.event_name == 'pull_request' }}
-        uses: thollander/actions-comment-pull-request@v2
-        with:
-          message: |
-            ${{ steps.size.outputs.size_diff }}
-          comment_tag: size-diff
-
       # For successful push events, we save the snapshots cache
       - name: Save snapshots cache
         id: cache-upload