introduced in #178142

https://flutter-flutter-perf.luci.app/e/?begin=1762480945&end=1762954756&keys=Xf6704922d5ba2f7983cab8113fc69582&num_commits=50&request_type=0&xbaroffset=2805065

sub_result: average_frame_build_time_millis
test: dynamic_path_tessellation_perf_ios__timeline_summary
device: iPhone_16_Pro

cc @jason-simmons, I'm guessing some of this was expected? I just wanted to file this to make sure someone who was involved can give it the green light or not.