Marks Linux_android new_gallery_impeller__transition_perf to be flaky (#112578)

.ci.yaml

diff --git a/.ci.yaml b/.ci.yaml
index 15ba48a..6999d3b 100644
--- a/.ci.yaml
+++ b/.ci.yaml
@@ -1997,6 +1997,7 @@
       task_name: new_gallery__transition_perf
 
   - name: Linux_android new_gallery_impeller__transition_perf
+    bringup: true # Flaky https://github.com/flutter/flutter/issues/112577
     recipe: devicelab/devicelab_drone
     presubmit: false
     timeout: 60