[Thread] fix multidevice tests name am: 7d64fe750d

Original change: https://android-review.googlesource.com/c/platform/packages/modules/Connectivity/+/3093043

Change-Id: Ifcd7c1bdc05c7cfd9275e293283d0bec813ac40a
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>