Let jvmti allow JDWP connections

We were incorrectly asserting that the JDWP thread doesn't start until
after the kInit runtime phase has passed but this is not necessarily
the case if JDWP is started with the runtime.

Bug: 35213182
Test: manual
Change-Id: Iea325684fa6a4717176ed8f8070fa1d1bb0e18c7