Add user-visible output for remote operations (#25849)

This PR adds toasts for reporting success and errors from remote git
operations. This PR also adds a focus handle to notifications, in
anticipation of making them keyboard accessible.

Release Notes:

- N/A

---------

Co-authored-by: julia <julia@zed.dev>

crates/file_finder/src/new_path_prompt.rs

@@ -192,7 +192,7 @@ impl Match {
             }
         }
 
-        StyledText::new(text).with_highlights(&window.text_style().clone(), highlights)
+        StyledText::new(text).with_default_highlights(&window.text_style().clone(), highlights)
     }
 }