Vulkan: Reduce scope of clear workaround
Vulkan: Reduce scope of clear workaround

Forcing draw for clear only appears to be needed on Pixel 2.

Test: angle_perftest --gtest_filter="*free_fire*"
Bug: angleproject:4836
Change-Id: I4446adc04a8e5cf7b0bfef68ec70122e847755a6
Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/2495484
Reviewed-by: Jamie Madill <7e492b4f1c8458024932de3ba475cbf015424c30@chromium.org>
Reviewed-by: Shahbaz Youssefi <582eeec4f08a2ccd61e3ef52115e6e7c571582de@chromium.org>
Commit-Queue: Shahbaz Youssefi <582eeec4f08a2ccd61e3ef52115e6e7c571582de@chromium.org>

ppy/angle,ppy/angle,ppy/angle,ppy/angle