Rebuild buffer store to be aware of remote/local distinction (#18303)

Release Notes:

- N/A

---------

Co-authored-by: Mikayla <mikayla@zed.dev>

crates/remote_server/src/remote_editing_tests.rs

@@ -56,6 +56,7 @@ async fn test_basic_remote_editing(cx: &mut TestAppContext, server_cx: &mut Test
         })
         .await
         .unwrap();
+
     buffer.update(cx, |buffer, cx| {
         assert_eq!(buffer.text(), "fn one() -> usize { 1 }");
         assert_eq!(