git: Pass project environment to git binary invocations (#26301)

Closes #26213 

Release Notes:

- Git Beta: pass down environment variables from project to git
operations

crates/gpui/src/app/entity_map.rs

@@ -178,6 +178,7 @@ impl EntityMap {
     }
 }
 
+#[track_caller]
 fn double_lease_panic<T>(operation: &str) -> ! {
     panic!(
         "cannot {operation} {} while it is already being updated",