Enable konflux push build on main (#1134)

Author: OlivierCazade

.tekton/network-observability-console-plugin-ystream-push.yaml

@@ -8,8 +8,8 @@ metadata:
     build.appstudio.redhat.com/target_branch: '{{target_branch}}'
     pipelinesascode.tekton.dev/max-keep-runs: "3"
     # switch comment in/out at branch cut / release
-    # pipelinesascode.tekton.dev/on-cel-expression: event == "push" && target_branch == "main"
-    pipelinesascode.tekton.dev/on-cel-expression: "false"
+    pipelinesascode.tekton.dev/on-cel-expression: event == "push" && target_branch == "main"
+    # pipelinesascode.tekton.dev/on-cel-expression: "false"
   creationTimestamp: null
   labels:
     appstudio.openshift.io/application: netobserv-ystream