Revert "sched: Do not reduce perceived CPU capacity while idle"

This reverts commit e16f6f5.

Author: ExactExampl

kernel/sched/features.h

@@ -43,7 +43,7 @@ SCHED_FEAT(LB_BIAS, true)
 /*
  * Decrement CPU capacity based on time not spent running tasks
  */
-SCHED_FEAT(NONTASK_CAPACITY, false)
+SCHED_FEAT(NONTASK_CAPACITY, true)
 
 /*
  * Queue remote wakeups on the target CPU and process them