[RESTRICT AUTOMERGE] Disallow PINNED in setLaunchWindowingMode

- Throw security exception if setLaunchWindowingMode is called with
  WINDOWING_MODE_PINNED
- Deprecated also test cases that are irrelevant after this change

Flag: EXEMPT security fix
Bug: 388029380
Test: atest PinnedStackTests \
            SafeActivityOptionsTest \
            TaskLaunchParamsModifierTests
(cherry picked from https://googleplex-android-review.googlesource.com/q/commit:8a4c404ef5f066fbd3015cec287322c1b1f8a438)
Merged-In: I9d37d41af3d86f785fd5d85503b544552b39cac4
Change-Id: I9d37d41af3d86f785fd5d85503b544552b39cac4