Description

Adds URL validation for Webex receiver configuration fields when loaded from secrets. This ensures URLs are validated regardless of whether configurations come from CustomResources or secrets.

Relates to: #8193

Type of change

What type of changes does your code introduce to the Prometheus operator? Put an x in the box that apply.

• CHANGE (fix or feature that would cause existing functionality to not work as expected)
• FEATURE (non-breaking change which adds functionality)
• BUGFIX (non-breaking change which fixes an issue)
• ENHANCEMENT (non-breaking change which improves existing functionality)
• NONE (if none of the other choices apply. Example, tooling, build system, CI, docs, etc.)

Verification

Please check the Prometheus-Operator testing guidelines for recommendations about automated tests.

• Add test case for Invalid URL test: Verifies that invalid URLs are caught and return an error
• Add test case for Valid URL test: Verifies that valid URLs like "https://webexapis.com/v1/messages" pass validation
• All tests pass successfully

Changelog entry

Please put a one-line changelog entry below. This will be copied to the changelog file during the release process.