Marks Linux_android android_choreographer_do_frame_test to be flaky (#119721)

Author: fluttergithubbot

.ci.yaml

@@ -2375,6 +2375,7 @@ targets:
       task_name: gradient_static_perf__e2e_summary
 
   - name: Linux_android android_choreographer_do_frame_test
+    bringup: true # Flaky https://github.com/flutter/flutter/issues/119720
     recipe: devicelab/devicelab_drone
     presubmit: false
     timeout: 60