Fix the testDumpOutput presubmit test

testDumpOutput depends on native timers, which are supported, if not
used in all phones.  However, native timers are not supported at all
on x86/MS-Windows test beds.  So, the test now silently returns if
native timers are not supported.

Test: atest
 * FrameworksServicesTests:AnrTimerTest

Bug: 326043049
Change-Id: Ic53db43fbaf826a6c9b925c4396010b7e267b6a0