file_finder: Remove common segments of long paths in search results (#25049)

This PR makes progress on #7711 by identifying any common prefix of the
paths in the file finder's search results, and replacing the "interior"
of that prefix---every path segment but the first and last---with `...`,
when a heuristic indicates that the longest path would otherwise
overflow the modal.

The elision is not applied to any segment that contains a match for the
search query.

There may be more work to do on #7711 in the case of long result paths
that do not share a significant common prefix.

Release Notes:

- Improved display of long paths in the file finder modal

Co-authored-by: Max <max@zed.dev>

crates/outline_panel/src/outline_panel.rs

@@ -2361,7 +2361,6 @@ impl OutlinePanel {
         )
     }
 
-    #[allow(clippy::too_many_arguments)]
     fn render_search_match(
         &mut self,
         multi_buffer_snapshot: Option<&MultiBufferSnapshot>,
@@ -2453,7 +2452,6 @@ impl OutlinePanel {
         ))
     }
 
-    #[allow(clippy::too_many_arguments)]
     fn entry_element(
         &self,
         rendered_entry: PanelEntry,
@@ -3839,7 +3837,6 @@ impl OutlinePanel {
         })
     }
 
-    #[allow(clippy::too_many_arguments)]
     fn push_entry(
         &self,
         state: &mut GenerationState,
@@ -4057,7 +4054,6 @@ impl OutlinePanel {
         update_cached_entries
     }
 
-    #[allow(clippy::too_many_arguments)]
     fn add_excerpt_entries(
         &self,
         state: &mut GenerationState,
@@ -4116,7 +4112,6 @@ impl OutlinePanel {
         }
     }
 
-    #[allow(clippy::too_many_arguments)]
     fn add_search_entries(
         &mut self,
         state: &mut GenerationState,