Fixs when disable component during system busy, the framework have high possibility to force closing activities on the same task.
test
1. setup a pin code and go through to the anything else page. click "control info on lock screen".
>> The SetupRedactionInterstitial not been disabled.
>> The lock screen can be setup repeatedly.
2. into home screen. using adb command to start SetupRedactionInterstitial.
>> the screen not shown.
3. using adb command to start RedactionInterstitial and click "done".
>> the activity existed normally.
Bug: 158961310
Test: Manual
Change-Id: I09fe95db591d3d3603b2c13623a0873bfab3bac0
40b79387cc