Fix the smallest width not updated while resolving override bounds

Using the resolved override bounds vs. the current bounds to
check if the TaskFragment has bounds override and updates the
smallest width.

Or the activity in the embedded TaskFragment could be relaunched
next time resolving override configuration due to smallest width
changed.

Bug: 273184670
Test: steps on the bugs
Change-Id: I014decd10d14b8a2f25c8ac6833768cc5f89c624