Added the ability to manually trigger RHDH nightly CI jobs through the OpenShift CI (Prow) REST API with support for overriding key parameters such as the image under test, the repository fork, and Slack alerting. This is useful for verifying RC builds or running jobs against a personal fork without affecting shared CI results.

On the OpenShift CI side, step registry configs were updated to declare overridable environment variables (SKIP_SEND_ALERT, image, fork settings), and results from manually triggered jobs are skipped when reporting to the Data Router since they may not be representative.

On the RHDH repo side, a shell script and an AI command were added for easy job triggering — the AI command fetches available job names and images, and interactively asks about Slack alerts and fork usage.