Fix task dumpsys output and add isForceHidden field.

This commit fixes the formatting issues in the dumpsys output for Task
by adding the missing prefix before "isPerceptible=" and removing the
extra space before "isTrimmable=".

Additionally, this commit includes the "isForceHidden=" field in the
output to make debugging force-hidden tasks easier.

Bug: 387193964
Test: adb shell dumpsys activity recents
Flag: EXEMPT log only update
Change-Id: Icc27100d8cc76ed746899e869a691d9e6e228352