Fix bracket colorization not working in file-less files with a proper language (#43947)

Follow-up of https://github.com/zed-industries/zed/pull/43172

Release Notes:

- Fixed bracket colorization in file-less files with a proper language

crates/editor/src/editor.rs

@@ -5308,12 +5308,10 @@ impl Editor {
 
     pub fn visible_excerpts(
         &self,
+        lsp_related_only: bool,
         cx: &mut Context<Editor>,
     ) -> HashMap<ExcerptId, (Entity<Buffer>, clock::Global, Range<usize>)> {
-        let Some(project) = self.project() else {
-            return HashMap::default();
-        };
-        let project = project.read(cx);
+        let project = self.project().cloned();
         let multi_buffer = self.buffer().read(cx);
         let multi_buffer_snapshot = multi_buffer.snapshot(cx);
         let multi_buffer_visible_start = self
@@ -5331,6 +5329,18 @@ impl Editor {
             .into_iter()
             .filter(|(_, excerpt_visible_range, _)| !excerpt_visible_range.is_empty())
             .filter_map(|(buffer, excerpt_visible_range, excerpt_id)| {
+                if !lsp_related_only {
+                    return Some((
+                        excerpt_id,
+                        (
+                            multi_buffer.buffer(buffer.remote_id()).unwrap(),
+                            buffer.version().clone(),
+                            excerpt_visible_range.start.0..excerpt_visible_range.end.0,
+                        ),
+                    ));
+                }
+
+                let project = project.as_ref()?.read(cx);
                 let buffer_file = project::File::from_dyn(buffer.file())?;
                 let buffer_worktree = project.worktree_for_id(buffer_file.worktree_id(cx), cx)?;
                 let worktree_entry = buffer_worktree
@@ -22592,7 +22602,7 @@ impl Editor {
         if self.ignore_lsp_data() {
             return;
         }
-        for (_, (visible_buffer, _, _)) in self.visible_excerpts(cx) {
+        for (_, (visible_buffer, _, _)) in self.visible_excerpts(true, cx) {
             self.register_buffer(visible_buffer.read(cx).remote_id(), cx);
         }
     }