more robust fix for flyby timer issue #17665

Job	Run time
Compile Maps	1m 45s
Find Maps to Test	13s
Run Linters	1m 48s
Windows Build	2m 31s
Unit Tests (corsat) / run_unit_tests	6m 48s
Unit Tests (chinook) / run_unit_tests	6m 8s
Unit Tests (bigredv2) / run_unit_tests	6m 40s
Unit Tests (almayer) / run_unit_tests	6m 46s
Unit Tests (desert_dam) / run_unit_tests	6m 51s
Unit Tests (fiorina_sciannex) / run_unit_tests	6m 22s
Unit Tests (ice_colony_v2) / run_unit_tests	6m 47s
Unit Tests (kutjevo) / run_unit_tests	6m 49s
Unit Tests (lv522_chances_claim) / run_unit_tests	6m 13s
Unit Tests (lv624) / run_unit_tests	6m 27s
Unit Tests (new_varadero) / run_unit_tests	6m 28s
Unit Tests (prison_station_fop) / run_unit_tests	6m 54s
Unit Tests (shivas_snowball) / run_unit_tests	6m 36s
Unit Tests (runtime) / run_unit_tests	6m 20s
Unit Tests (sorokyne_strata) / run_unit_tests	6m 56s
Unit Tests (whiskey_outpost_v2) / run_unit_tests	6m 15s
Alternate Tests (515, 1610, lv624) / run_unit_tests	6m 26s
Check Alternate Tests	2s
	1h 58m 5s

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