Description of problem:

In Konflux, I have noticed that the pipeline of MR is re-triggered when the MR content is modified (e.g, modify description, add reviewers, etc). I think that only new commits should re-triggered the pipeline automatically.

Example (pipeline is re-triggered when a new reviewer is added to the MR) https://gitlab.cee.redhat.com/istio/konflux/ossm/-/merge_requests/56#note_15068134

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

 ** Konflux setup with gitlab repo as a midstream.

Steps to Reproduce

1. Create MR that triggers a Konflux pipeline
2. Modify the description or add a reviewer
3. Verify that Konflux pipeline is re-triggered

Actual results:

The pipeline is re-triggered when the MR metadata changes

Expected results:

The pipeline should not re-triggered when the MR metadata changes

Reproducibility (Always/Intermittent/Only Once):

Always

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

 *