Adjust PiP source rect hint for window bounds

The source rect hint specified by the app is normally a result of
View#getGlobalVisibleRect (or equivalent) that does not count the window
offset in scenarios like the app is placed in the middle of display by
the system when
    - app specifies sensorLandscape
    - display is actually in portrait mode (on large screens)

Fixed this by adjust the source rect hint on ActivityRecord whenever the
internal PictureInPictureParams is updated.

Video: http://recall/-/aaaaaabFQoRHlzixHdtY/dr7uy1qxB1RGjZVvElo7kr
Bug: 235599028
Test: Verify entering PiP animation working as intended for \
      app specifies sensorLandscape when auto-enter-pip and \
      make-launch-into-pip (aka. content-pip).
Test: atest WmTests:ActivityRecorderTests \
            WmTests:ActivityStarterTests
Change-Id: Id991adbae45a7b61d09105a9aee9cbfecd6b66be