feat(cd): adding prod deploy trigger for older branches (#17095)

Author: ChronosSF

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

@@ -0,0 +1,39 @@
+name: Trigger Licensed Release
+
+permissions:
+  contents: read
+
+on:
+  release:
+    types: [created]
+  workflow_dispatch:
+    inputs:
+      release_tag:
+        description: 'Release tag to dispatch (e.g. 21.1.1)'
+        required: true
+        type: string
+
+jobs:
+  dispatch-to-private-repo:
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Get app token
+        id: app-token
+        uses: actions/create-github-app-token@v2
+        with:
+          app-id: ${{ secrets.IGNITEUI_GITHUB_APP_ID }}
+          private-key: ${{ secrets.IGNITEUI_GITHUB_APP_PRIVATE_KEY }}
+          owner: IgniteUI
+
+      - name: Send repository dispatch to private repo
+        uses: peter-evans/repository-dispatch@ff45666b9427631e3450c54a1bcbee4d9ff4d7c0 # v3
+        with:
+          token: ${{ steps.app-token.outputs.token }}
+          repository: IgniteUI/igniteui-actions
+          event-type: igniteui-angular-public-release-created
+          client-payload: |
+            {
+              "release_tag": "${{ github.event_name == 'workflow_dispatch' && inputs.release_tag || github.event.release.tag_name }}",
+              "public_repo": "${{ github.repository }}"
+            }