Fix pipeline runner caches permissions
What does this MR do?
Remove Clear runner caches button for non-Master users.
Are there points in the code the reviewer needs to double check?
Nothing at the moment.
Why was this MR needed?
Removes non-working button from UI. Adds permission to clear runner caches for Master users.
Does this MR meet the acceptance criteria?
-
Changelog entry added, if necessary -
Tests added for this feature/bug - Review
-
Has been reviewed by UX -
Has been reviewed by Frontend -
Has been reviewed by Backend
-
What are the relevant issue numbers?
Closes #42495 (closed)