Fixes custom ERT calling #18027

Job	Run time
Lint with OpenDream	3m 3s
Compile Maps	1m 25s
Run Linters	1m 34s
Find Maps to Test	12s
Windows Build	2m 59s
Unit Tests (chinook) / run_unit_tests	6m 14s
Unit Tests (corsat) / run_unit_tests	6m 27s
Unit Tests (almayer) / run_unit_tests	6m 19s
Unit Tests (bigredv2) / run_unit_tests	6m 38s
Unit Tests (desert_dam) / run_unit_tests	6m 16s
Unit Tests (ice_colony_v2) / run_unit_tests	6m 26s
Unit Tests (fiorina_sciannex) / run_unit_tests	6m 36s
Unit Tests (kutjevo) / run_unit_tests	6m 24s
Unit Tests (lv522_chances_claim) / run_unit_tests	6m 18s
Unit Tests (lv624) / run_unit_tests	6m 48s
Unit Tests (new_varadero) / run_unit_tests	7m 12s
Unit Tests (prison_station_fop) / run_unit_tests	6m 45s
Unit Tests (runtime) / run_unit_tests	6m 34s
Unit Tests (shivas_snowball) / run_unit_tests	6m 41s
Unit Tests (sorokyne_strata) / run_unit_tests	6m 28s
Unit Tests (whiskey_outpost_v2) / run_unit_tests	6m 9s
Alternate Tests (515, 1610, lv624) / run_unit_tests	6m 20s
Check Alternate Tests	2s
	1h 59m 50s

Provide feedback