Fix flaky testNoMetricsWrittenForShortDuration_LegacyApfFilter am: 95093d4932

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

Change-Id: Ifad33b5409d2d564fc889a8a4895be0949ed8411
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>