fix: concurrency conditions in Playwright workflow

Author: imantsk

.github/workflows/playwright.yml

@@ -20,20 +20,20 @@ permissions:
   actions: read
 
 concurrency:
-  group: playwright-${{ github.event_name }}-${{ github.event_name == 'pull_request' && github.event.pull_request.number || github.ref }}
-  cancel-in-progress: ${{ github.event_name == 'pull_request' }}
+  group: playwright-${{ github.event_name }}-${{ github.event_name == 'pull_request' && github.event.pull_request.number || github.ref }}-${{ (github.event_name != 'pull_request' || (contains(github.event.pull_request.labels.*.name, 'run-tests') && (github.event.action != 'labeled' || github.event.label.name == 'run-tests' || github.event.label.name == 'multisite'))) && 'tests' || 'noop' }}
+  cancel-in-progress: ${{ github.event_name == 'pull_request' && (contains(github.event.pull_request.labels.*.name, 'run-tests') && (github.event.action != 'labeled' || github.event.label.name == 'run-tests' || github.event.label.name == 'multisite')) }}
 
 jobs:
   playwright-default:
-    if: github.event_name != 'pull_request' || ((github.event.action != 'labeled' && contains(github.event.pull_request.labels.*.name, 'run-tests')) || (github.event.action == 'labeled' && (github.event.label.name == 'run-tests' || (github.event.label.name == 'multisite' && contains(github.event.pull_request.labels.*.name, 'run-tests')))))
+    if: github.event_name != 'pull_request' || (contains(github.event.pull_request.labels.*.name, 'run-tests') && (github.event.action != 'labeled' || github.event.label.name == 'run-tests' || github.event.label.name == 'multisite'))
     uses: ./.github/workflows/playwright-test.yml
     with:
       test-mode: 'default'
       project-name: 'chromium-db-snippets'
       multisite: ${{ github.event_name == 'pull_request' && contains(github.event.pull_request.labels.*.name, 'run-tests') && contains(github.event.pull_request.labels.*.name, 'multisite') }}
 
   playwright-file-based-execution:
-    if: github.event_name != 'pull_request' || ((github.event.action != 'labeled' && contains(github.event.pull_request.labels.*.name, 'run-tests')) || (github.event.action == 'labeled' && (github.event.label.name == 'run-tests' || (github.event.label.name == 'multisite' && contains(github.event.pull_request.labels.*.name, 'run-tests')))))
+    if: github.event_name != 'pull_request' || (contains(github.event.pull_request.labels.*.name, 'run-tests') && (github.event.action != 'labeled' || github.event.label.name == 'run-tests' || github.event.label.name == 'multisite'))
     uses: ./.github/workflows/playwright-test.yml
     with:
       test-mode: 'file-based-execution'