Merge "binder: add an isHandlingTransaction method" am: a8349b9be9 am: a0f2a94f6c am: c9e2a9c27e am: 8ac7325b65 am: 8ecbc56038

Original change: https://android-review.googlesource.com/c/platform/frameworks/native/+/1806594

Change-Id: I575290e9097227f1ad06135c6be5f97022762f62