Description of problem:

pipelineRun does not get triggered on push events when I use

annotations:
    pipelinesascode.tekton.dev/on-cel-expression: |
       event == "push" && target_branch == "[refs/heads/*]" &&
       (
         "**/staging/**".pathChanged()
       )

However CI gets triggered when we specify the exact branch.

Prerequisites (if any, like setup, operators/versions):

Steps to Reproduce

•  Create a simple pipelineRun specifying the target branch with refs inside on-cel-expression.

Actual results:

Expected results:

CI should get triggered with `ref/heads/*` 

Reproducibility (Always/Intermittent/Only Once):

Always

Acceptance criteria: 

Definition of Done:

Build Details:

Additional info (Such as Logs, Screenshots, etc):

Running on ocp 4.12

Setup pac using latest openshift-pipelines operator

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