Fix pip enter crash in landscape split-screen pair

On the mobile device, select two apps to enter split screen mode and switch to landscape, then click the button to enter PIP. Crashes may occur when starting a new Activity as a pip activity, e.g. Weibo.

Bug: 382303517
Test: Enable auto rotation.
      Enter split screen with Task A and Task B.
      Rotate to landscape.
      A uses application context to launch a translucent Task C.
      C sets orientation to portrait and calls enterPip when creating.

Change-Id: I78dcc2c3a116784556b1487aff7f6c54c8c52279
Signed-off-by: renbin3 <renbin3@xiaomi.com>