Android: Sleep after orientation change in EGL test In each of the EGLPreRotation* tests that change dislay orientation, we have a sleep that gives the Android device time to react. A new test was added that didn't include the sleeps and is causing flaky asserts based on how it got sharded for testing. This CL adds the sleeps, mirroring other tests. Test: EGLPreRotationSurfaceTest.CheckSurfaceCapabilities Bug: angleproject:395110957 Change-Id: If2a959d69ba4f4b4ed0f6a6fbffb94762174966d Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/6244919 Auto-Submit: Cody Northrop <cnorthrop@google.com> Reviewed-by: Cody Northrop <cnorthrop@google.com> Commit-Queue: Shahbaz Youssefi <syoussefi@chromium.org> Reviewed-by: Shahbaz Youssefi <syoussefi@chromium.org>