fix(reposerver): fix OCI repository matching (#12436)

[MioOgbeni]

When an OCI repository is used as a Helm Chart dependency, there must not be an exact match for the dependency URL and the repo URL. This PR fixes usage for OCI registry located deeper in the registry structure.

I also created a unit test for this case

Fixes #12436

This issue is also in older version v2.10.7, it would be great if the PR was cherry-picked into the v2.10.x patch.

Checklist:

• Either (a) I've created an enhancement proposal and discussed it with the community, (b) this is a bug fix, or (c) this does not need to be in the release notes.
• The title of the PR states what changed and the related issues number (used for the release note).
• The title of the PR conforms to the Toolchain Guide
• I've included "Closes [ISSUE #]" or "Fixes [ISSUE #]" in the description to automatically close the associated issue.
• I've updated both the CLI and UI to expose my feature, or I plan to submit a second PR with them.
• Does this PR require documentation updates?
• I've updated documentation as required by this PR.
• I have signed off all my commits as required by DCO
• I have written unit and/or e2e tests for my change. PRs without these are unlikely to be merged.
• My build is green (troubleshooting builds).
• My new feature complies with the feature status guidelines.
• I have added a brief description of why this PR is necessary and/or what this PR solves.
• Optional. My organization is added to USERS.md.
• Optional. For bug fixes, I've indicated what older releases this fix should be cherry-picked into (this may or may not happen depending on risk/complexity).

[LordGaav]

Any progress on this? The code change looks simple enough, and without this OCI Helm charts that require credentials are not really usable.