Fix flaky testNoMetricsWrittenForShortDuration_LegacyApfFilter am: 95093d4932 am: 93de416247

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

Change-Id: I606cb4ce6414afa4aba814a54720dcc4c5a7ebe1
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>