Fixes Burrowers being able to use corrosive acid while underground #24805

Job	Run time
Compile Maps	46s
Lint with OpenDream	21s
Find Maps to Test	9s
Run Linters	2m 14s
Windows Build	1m 12s
Alternate Tests	0s
Check Alternate Tests	0s
Unit Tests (almayer) / run_unit_tests	3m 24s
Unit Tests (bigredv2) / run_unit_tests	3m 22s
Unit Tests (chinook) / run_unit_tests	2m 50s
Unit Tests (corsat) / run_unit_tests	3m 10s
Unit Tests (desert_dam) / run_unit_tests	3m 17s
Unit Tests (fiorina_sciannex) / run_unit_tests	2m 57s
Unit Tests (ice_colony_v2) / run_unit_tests	2m 57s
Unit Tests (kutjevo) / run_unit_tests	3m 20s
Unit Tests (lv522_chances_claim) / run_unit_tests	3m 4s
Unit Tests (lv624) / run_unit_tests	3m 20s
Unit Tests (new_varadero) / run_unit_tests	3m 9s
Unit Tests (prison_station_fop) / run_unit_tests	2m 49s
Unit Tests (runtime) / run_unit_tests	2m 40s
Unit Tests (shivas_snowball) / run_unit_tests	2m 49s
Unit Tests (sorokyne_strata) / run_unit_tests	2m 58s
Unit Tests (whiskey_outpost_v2) / run_unit_tests	2m 47s
	53m 35s

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