[RESTRICT AUTOMERGE] Effect AIDL VTS: skip state check after STOP

Only check state after STOP if draining is not supported
Some HAL implementations may need to do draining before transit to IDLE
Draining state introduced in kDrainSupportedVersion

Flag: EXEMPT bugfix
Bug: 386161796
Test: atest --test-mapping hardware/interfaces/audio/aidl/vts:presubmit
Change-Id: I74d3d674950cbdaf4ae5e6d839dd06f96b2e8142
Merged-In: I74d3d674950cbdaf4ae5e6d839dd06f96b2e8142
(cherry picked from commit eeda2b2e)