In RFST_IDLE, block RF_DISCOVER_RSP callback only if DISABLING am: c11f55d17c

Original change: https://android-review.googlesource.com/c/platform/system/nfc/+/3128026

Change-Id: Icc77d071fb2be5b8884f9d74959ac16871f53afb
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>