Fix TestCloneProperties for go 1.21 am: 50fe8e79e5 am: 6ed8e962c4 am: 4c935d4772

Original change: https://android-review.googlesource.com/c/platform/build/blueprint/+/2824190

Change-Id: I7374ed0017dab36a9d4b0dcc1a541509eb836d80
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>