Hide PR CTAs on default branch and make git invalidation non-blocking

- Only show open/create PR actions after push on non-default branches
- Fire git query invalidation without awaiting mutation success handlers
- Tweak disabled button classes to keep split-button borders/radii aligned
1fe3cf53a7Julius Marminge committed on 2/15/2026, 7:53:29 AMparent07187d3
2 files changedLine totals unavailable