Track how many times Secret Push Protection has been skipped

What does this MR do and why?

This adds internal tracking events to Secret Push Protection (SPP) so we can get insight into how often users are skipping SPP and which method (commit message or push option) they are using most.

MR acceptance checklist

Please evaluate this MR against the MR acceptance checklist. It helps you analyze changes to reduce risks in quality, performance, reliability, security, and maintainability.

How to set up and validate locally

Numbered steps to set up and validate the change are strongly suggested.