ci: revert to push/PR triggers for TCK workflow

Run TCK directly on push to main and PRs against main instead of
chaining via workflow_run.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Author: jmesnil

.github/workflows/run-tck.yml

@@ -1,10 +1,12 @@
 name: Run TCK
 
 on:
-  workflow_run:
-    workflows: ["Build and Test"]
-    types:
-      - completed
+  push:
+    branches:
+      - main
+  pull_request:
+    branches:
+      - main
   workflow_dispatch:
 
 env:
@@ -21,7 +23,6 @@ concurrency:
 
 jobs:
   tck-test:
-    if: ${{ github.event_name == 'workflow_dispatch' || github.event.workflow_run.conclusion == 'success' }}
     runs-on: ubuntu-latest
     strategy:
       matrix: