Add #[track_caller] to test utilities that involve marked text (#32043)

Release Notes:

- N/A

crates/language/src/buffer_tests.rs

@@ -3701,6 +3701,7 @@ fn get_tree_sexp(buffer: &Entity<Buffer>, cx: &mut gpui::TestAppContext) -> Stri
 }
 
 // Assert that the enclosing bracket ranges around the selection match the pairs indicated by the marked text in `range_markers`
+#[track_caller]
 fn assert_bracket_pairs(
     selection_text: &'static str,
     bracket_pair_texts: Vec<&'static str>,

crates/language/src/syntax_map/syntax_map_tests.rs

@@ -1317,6 +1317,7 @@ fn assert_layers_for_range(
     }
 }
 
+#[track_caller]
 fn assert_capture_ranges(
     syntax_map: &SyntaxMap,
     buffer: &BufferSnapshot,