Suppress native proxy icon on cmux main windows - #3973

Bugbot Analysis Progress (6m 59s elapsed)

✅ Gathered PR context (3s)
✅ Completed bug detection (6m 55s)
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Final Result: Bugbot completed review - no issues found! ✅

Request ID: serverGenReqId_20a990f6-7f32-4ccc-8443-268a4689de27