Fix flaky testNoMetricsWrittenForShortDuration_LegacyApfFilter am: 95093d4932 am: 93de416247 am: 514bc92522

Original change: https://android-review.googlesource.com/c/platform/packages/modules/NetworkStack/+/2864101

Change-Id: I81365fde56172e940d2f297c35f0c7f0f9de39da
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>