Fix case sensitivity in CODEOWNERS validation
What is the problem?
Currently, CODEOWNERS validation incorrectly rejects valid usernames and group names when the case doesn't exactly match. For example, @REPORTED_user_21 would be rejected even if the user exists as @reported_user_21 in GitLab's database.
This creates confusion for users who expect case-insensitive matching, similar to how GitLab handles usernames and group paths elsewhere in the application.
Related to: CODEOWNERS Syntax Check is Case Sensitive, Appr... (#553323 - closed)
What does this MR do?
Fixes case sensitivity issues in CODEOWNERS validation by making username and group name matching case-insensitive.
Screenshots or screen recordings
Actual usernames in GitLab: @reported_user_21, @TestUser, group path: @codeowner-test1
Before: @REPORTED_user_21 returns a syntax error |
After: @REPORTED_user_21, @testUser, @Codeowner-TEST1 all passed |
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How to set up and validate locally
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