[am] move incremental manager calls to post dumpStackTraces

To make sure we do not delay taking the thread dump

BUG: 186858453
Test: atest android.cts.statsdatom.statsd.UidAtomTests#testANROccurred
Change-Id: Ia076c72d0b9763f05ddf733dbd6ff73c7fa4c614
1 file changed