file_finder: Add skip_focus_for_active_in_search setting (#27624)

Closes #27073

Currently, when searching for a file with Ctrl+P, and the first file
found is the active one, file_finder skips focus to the second file
automatically. This PR adds a setting to disable this and make the first
file always the focused one.

Default setting is still skipping the active file.

Release Notes: 

- Added the `skip_focus_for_active_in_search` setting for the file
finder, which allows turning off the default behavior of skipping focus
on the active file while searching in the file finder.

---------

Co-authored-by: Smit Barmase <heysmitbarmase@gmail.com>

crates/file_finder/src/file_finder_tests.rs

@@ -1359,6 +1359,73 @@ async fn test_keep_opened_file_on_top_of_search_results_and_select_next_one(
     });
 }
 
+#[gpui::test]
+async fn test_setting_auto_select_first_and_select_active_file(cx: &mut TestAppContext) {
+    let app_state = init_test(cx);
+
+    cx.update(|cx| {
+        let settings = *FileFinderSettings::get_global(cx);
+
+        FileFinderSettings::override_global(
+            FileFinderSettings {
+                skip_focus_for_active_in_search: false,
+                ..settings
+            },
+            cx,
+        );
+    });
+
+    app_state
+        .fs
+        .as_fake()
+        .insert_tree(
+            path!("/src"),
+            json!({
+                "test": {
+                    "bar.rs": "// Bar file",
+                    "lib.rs": "// Lib file",
+                    "maaa.rs": "// Maaaaaaa",
+                    "main.rs": "// Main file",
+                    "moo.rs": "// Moooooo",
+                }
+            }),
+        )
+        .await;
+
+    let project = Project::test(app_state.fs.clone(), [path!("/src").as_ref()], cx).await;
+    let (workspace, cx) = cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
+
+    open_close_queried_buffer("bar", 1, "bar.rs", &workspace, cx).await;
+    open_close_queried_buffer("lib", 1, "lib.rs", &workspace, cx).await;
+    open_queried_buffer("main", 1, "main.rs", &workspace, cx).await;
+
+    // main.rs is on top, previously used is selected
+    let picker = open_file_picker(&workspace, cx);
+    picker.update(cx, |finder, _| {
+        assert_eq!(finder.delegate.matches.len(), 3);
+        assert_match_selection(finder, 0, "main.rs");
+        assert_match_at_position(finder, 1, "lib.rs");
+        assert_match_at_position(finder, 2, "bar.rs");
+    });
+
+    // all files match, main.rs is on top, and is selected
+    picker
+        .update_in(cx, |finder, window, cx| {
+            finder
+                .delegate
+                .update_matches(".rs".to_string(), window, cx)
+        })
+        .await;
+    picker.update(cx, |finder, _| {
+        assert_eq!(finder.delegate.matches.len(), 5);
+        assert_match_selection(finder, 0, "main.rs");
+        assert_match_at_position(finder, 1, "bar.rs");
+        assert_match_at_position(finder, 2, "lib.rs");
+        assert_match_at_position(finder, 3, "moo.rs");
+        assert_match_at_position(finder, 4, "maaa.rs");
+    });
+}
+
 #[gpui::test]
 async fn test_non_separate_history_items(cx: &mut TestAppContext) {
     let app_state = init_test(cx);