Fix errors not showing in fleet git repo form

[richard-cox]

Summary

Fixes #12391

Occurred changes and/or fixed issues

Missed from

• FIX: Vue3 => Error info when creating NavLink is not shown to user #11956 (comment)
• Vue3: Edit components can fail to relay errors #12298
• Add inheritAttrs: false to edit components #12299

Technical notes summary

i could reproduce this in release-2.9 head

Areas or cases that should be tested

git repo create / edit with failures
given recent git repo url change though to reproduce an easy error try creating a git repo with a name of an existing one

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

[momesgin]

tested, and lgtm

[richard-cox]

@momesgin I gave this another go and it looks ok. could you provide some repro steps for the failure (to show the failure)?

[momesgin]

@momesgin I gave this another go and it looks ok. could you provide some repro steps for the failure (to show the failure)?

I acted fast and did a re-test before your comment 😁, already approved 🚀