Tony Huang 62c6c83f57 Make split screen only reparent top task
Follow latest split screen UX model, it should only reparent
the top task to split for app-pair model.

Fix: 201480664
Bug: 202740040
Test: manual
Test: pass existing tests
Change-Id: I4b360a31ce8e7366a77216a94b5f1b19bba848e9
2021-10-14 15:37:00 +08:00
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21 GiB
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