RESTRICT AUTOMERGE Validate permission tree size on permission update Bug: 242537498 Test: manual Change-Id: I15343e84c1802d6b89249106263319a6539fa73b Merged-In: I15343e84c1802d6b89249106263319a6539fa73b (cherry picked from commit 8fdf4530aac096d87c8d6afe64036f972a3835be) Merged-In: I15343e84c1802d6b89249106263319a6539fa73b