Add a few tests for `ArtMethod::Invoke*()` helpers. am: ad6598372d

Original change: https://android-review.googlesource.com/c/platform/art/+/2310529

Change-Id: Icc07e00bc69c28ac96feb8556372e705efa19c83
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>