Unblocking surface sync if the viewroot dies before traversal can happen

Bug: 260135164
Test: Verified the code flow as the cause of bug
Change-Id: Ie168b7cb772f6ec89063a42a7b15e7d5342f5bd3
Merged-in: Ie168b7cb772f6ec89063a42a7b15e7d5342f5bd3
1 file changed