Crash fix: Log instead of crashing when moving child notif within group.

Fixes: 213038631
Test: manual dismissing; adding to groups; getting groups to reorder
Depends-On: Iedad4a54fc44e9ff900357b3486cc62516701c45
Change-Id: Ic018d949e09ff41f8d7644fda2d6d4321c64199e
1 file changed