Combine all try workflows (#30096)

There are currently two ways to run try. One is to push to the `try` or
`try-*` branches and the other is to trigger a workflow via GitHub
comment. This change combines these methods into one workflow. In
addition, WPT results are reported together rather than separately and
filtered results for all WPT tests are bundled together in the same
artifact.

.github/workflows/mac-wpt.yml

@@ -45,20 +45,23 @@ jobs:
         run: python3 ./mach smoketest --release
       - name: Run tests
         run: |
+          mkdir macos-${{ inputs.layout }}
           python3 ./mach test-wpt --with-${{ inputs.layout }} \
             --release --processes $(sysctl -n hw.logicalcpu) --timeout-multiplier 8 \
             --total-chunks ${{ env.max_chunk_id }} --this-chunk ${{ matrix.chunk_id }} \
             --log-raw test-wpt.${{ matrix.chunk_id }}.log \
-            --log-raw-unexpected unexpected-test-wpt.${{ matrix.chunk_id }}.log \
-            --filter-intermittents filtered-test-wpt.${{ matrix.chunk_id }}.json
+            --log-raw-unexpected macos-${{ inputs.layout }}/unexpected-test-wpt.${{ matrix.chunk_id }}.log \
+            --filter-intermittents macos-${{ inputs.layout }}/filtered-test-wpt.${{ matrix.chunk_id }}.json
       - name: Archive filtered results
         uses: actions/upload-artifact@v3
         if: always()
         with:
           name: wpt-filtered-results-mac-${{ inputs.layout }}
+          # The wildcard here ensures that the relative path is preserved in the archive:
+          # See https://github.com/actions/upload-artifact/issues/174
           path: |
-            filtered-test-wpt.${{ matrix.chunk_id }}.json
-            unexpected-test-wpt.${{ matrix.chunk_id }}.log
+            ./*macos-${{ inputs.layout }}/filtered-test-wpt.${{ matrix.chunk_id }}.json
+            ./*macos-${{ inputs.layout }}/unexpected-test-wpt.${{ matrix.chunk_id }}.log
       - name: Archive logs
         uses: actions/upload-artifact@v3
         if: failure()
@@ -66,33 +69,4 @@ jobs:
           name: wpt-logs-mac-${{ inputs.layout }}
           path: |
             test-wpt.${{ matrix.chunk_id }}.log
-            filtered-wpt-results.${{ matrix.chunk_id }}.json
-
-  report-test-results:
-    name: Reporting test results
-    runs-on: ubuntu-latest
-    if: ${{ always() && !cancelled() }}
-    needs: [ mac-wpt ]
-    steps:
-      - uses: actions/checkout@v3
-        with:
-          fetch-depth: 2
-      - uses: actions/download-artifact@v3
-        with:
-          name: wpt-filtered-results-mac-${{ inputs.layout }}
-          path: wpt-filtered-results-mac
-      - name: Create aggregated unexpected results
-        run: cat wpt-filtered-results-mac/*.log > unexpected-test-wpt.log
-      - name: Archive aggregate results
-        uses: actions/upload-artifact@v3
-        with:
-          name: wpt-filtered-results-mac-${{ inputs.layout }}
-          path: |
-            unexpected-test-wpt.log
-      - name: Comment on PR with results
-        run: etc/ci/report_aggregated_expected_results.py --tag="mac-wpt-${{ inputs.layout }}"
-          wpt-filtered-results-mac/*.json
-        env:
-          GITHUB_CONTEXT: ${{ toJson(github) }}
-          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
-          RESULTS: ${{ toJson(needs.*.result) }}
+            filtered-wpt-results.${{ matrix.chunk_id }}.json