agent: Add GEMINI.md as a supported rules file name (#33381)

Gemini cli creates GEMINI.md file. This PR adds support for it.

Release Notes:

- agent: Add GEMINI.md as a supported rules file name
cc62125244Umesh Yadav committed on 6/25/2025, 5:14:49 PM· committed by GitHubparent224de2e
2 files changedLine totals unavailable