ART: 088-monitor-verification robustness

Adds ensureJitCompiled for OK.runNoMonitors() and OK.runStraightLine().

Failure today:

+dalvikvm32 F 10-04 10:23:00 199021 199021 stack_inspect.cc:165] Check failed: Java_Main_isManaged(env, cls)
+Runtime aborting...
+Dumping all threads without appropriate locks held: thread list lock mutator lock
+All threads:
...
+  at Main.assertIsManaged(Native method)
+  at OK.runNoMonitors(unavailable:-1)
+  at OK.run(unavailable:-1)
+  at java.lang.reflect.Method.invoke(Native method)
+  at Main.runTest(Main.java:257)
+  at Main.runSmaliTests(Main.java:224)
+  at Main.main(Main.java:73)

Bug: 67405280
Test: art/test/run-test --host --64 088
Change-Id: I59f42e7fb1dd93c6685f1110a872fa004c7160df