Refactor for tuning gfx-max-frame-time-99

Because canvas.clipPath() is heavy operation for GPU, draw roundness
background on notification row which need clip. However, some case
still can not handle will use clipPath as current design

Bug: 71900748
Test: atest SystemUITests & SystemUiJankTests#testNotificationListScroll
Change-Id: Ibc776ebd2f0dce5db7a2eb953ee6fac1747dea5a