BgDexopt: Reschedule job on timeout

When the background dexopt job times out, tell the scheduler to
reschedule it, as we have more work to do.

(cherry picked from commit c157be08)

Bug: 76425903
Test: m
Test: manual
Merged-In: Ibbdb979bceb1ff0a25f8aed2b3cc26a7f30057e2
Change-Id: Ibbdb979bceb1ff0a25f8aed2b3cc26a7f30057e2