[12941] Added banner for when url is https://github.com and auth is basic

[marcelofukumoto]

Summary

Fixes #12941

Occurred changes and/or fixed issues

• Added a new banner for when URL is https://github.com (no case sensitive) and BASIC auth.
• It should show mostly on EDIT/CREATE because it is when you can select, there is no rule for VIEW but should not show because the selected will be an auth already.

Technical notes summary

• Only github.com would have that logic clearly.
• No changes to the input since as a secret the name of the input is still PASSWORD

Areas or cases that should be tested

• CREATE/EDIT/VIEW GitRepo with the HTTP selected - should show
• CREATE/EDIT/VIEW GitRepo with the SSH selected - should not show
• CREATE/EDIT/VIEW HelmOps - Should not show

Areas which could experience regressions

• CREATE/EDIT/VIEW GitRepo

Screenshot/Video

Checklist

• The PR is linked to an issue and the linked issue has a Milestone, or no issue is needed
• The PR has a Milestone
• The PR template has been filled out
• The PR has been self reviewed
• The PR has a reviewer assigned
• The PR has automated tests or clear instructions for manual tests and the linked issue has appropriate QA labels, or tests are not needed
• The PR has reviewed with UX and tested in light and dark mode, or there are no UX changes
• The PR has been reviewed in terms of Accessibility
• The PR has considered, and if applicable tested with, the three Global Roles Admin, Standard User and User Base

[torchiaf]

LGTM