Filter out other languages' tasks from the task modal (#10839)

Release Notes:

- Fixed tasks modal showing history from languages, not matching the
currently active buffer's one

crates/tasks_ui/src/lib.rs

@@ -470,6 +470,7 @@ mod tests {
     pub(crate) fn init_test(cx: &mut TestAppContext) -> Arc<AppState> {
         cx.update(|cx| {
             let state = AppState::test(cx);
+            file_icons::init((), cx);
             language::init(cx);
             crate::init(cx);
             editor::init(cx);