Do not trigger the CI workflow automatically. One can still run it manually if needed. (#149246)

.github/workflows/ci.yml

@@ -1,14 +1,16 @@
 name: CI
 
-on:
-  push:
-    branches:
-      - main
-      - release/*
-  pull_request:
-    branches:
-      - main
-      - release/*
+on: workflow_dispatch
+
+# on:
+#   push:
+#     branches:
+#       - main
+#       - release/*
+#   pull_request:
+#     branches:
+#       - main
+#       - release/*
 
 jobs:
   windows: