Fix go back picker from full preview screen will crash

- Monitor package changed when the surface was already created
  before and currently was in the background.

- Reset surface's image view which is prepared for next
  surfaceCreated() time.

Bug: 167949512
Test: Manual
Change-Id: I2119949a7f6027d6aa242f0ac56379b44cf596a0
(cherry picked from commit 2bf0f35a1f8a215aa5a0c794e3098fddc40d8d6f)
1 file changed