Fix FramebufferVk::getScissoredRenderArea() for pre-rotation This fixes cases where pre-rotation wasn't occuring for small scissors used with glClear(). There are around 1000 tests that do this. Test: angle_deqp_gles2_tests --gtest_filter=dEQP.GLES2/functional_fragment_ops_depth_stencil_* Bug: angleproject:4431 Bug: b/157933235 Bug: b/157933198 Change-Id: I469d51975e3bc3a7bfc9521a3817c919e809f7dd Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/2228211 Reviewed-by: Cody Northrop <cnorthrop@google.com> Commit-Queue: Ian Elliott <ianelliott@google.com>