TEST: trigger release pipeline dry-run on pull_request

Adds a temporary workflow that fires on PRs against master and calls
dispatch-release.yml with dry-run=true and a small fixed package list
(fluentbit, argo_rollouts, aqua) so we can validate the pipeline
end-to-end without pushing tags or starting real builds.

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

Author: dkirov-dd

.github/workflows/test-release-trigger.yml

@@ -0,0 +1,22 @@
+name: TEST - Trigger Wheel Builds on PR (dry-run)
+
+# TEST ONLY: Exercises the release pipeline in dry-run mode on pull requests.
+# Remove or disable this workflow once the pipeline is validated.
+
+on:
+  pull_request:
+    branches:
+      - master
+
+jobs:
+  dispatch:
+    uses: DataDog/integrations-core/.github/workflows/dispatch-release.yml@master
+    with:
+      source-repo: integrations-extras
+      packages: '["fluentbit","argo_rollouts","aqua"]'
+      source-repo-ref: ${{ github.event.pull_request.head.sha }}
+      target: dev
+      dry-run: true
+    permissions:
+      id-token: write
+      contents: write