Account for early display rotation for gestures with shell transitions

- Ensure the events are in a consistent coordinate frame from the start
  of the gesture
- Now that the display rotation happens at the start of the gesture, we
  need to use the rotation at the start of the gesture in some cases
- Use the pre-rotation screenspace bounds when calculating the thumbnail
  matrix

Bug: 197687032
Test: Enable shell transitions and swipe up from a landscape app into
      force-portrait Launcher

Change-Id: I61ebe9947a55937c59a47336aa92561e7e3e8b66