Adds .38 Hearth and .38 Chilled ammo boxes, to the Black Market (#3425) #19196

Job	Run time
Compile Maps	40s
Run Linters	36s
Windows Build	47s
Integration Tests (BASIC_TESTS) / run_integration_tests	1m 1s
Integration Tests (CREATE_AND_DESTROY_TEST) / run_integration_tests	1m 8s
Integration Tests (PLANET_GEN_TEST) / run_integration_tests	1m 3s
Integration Tests (RUIN_PLACEMENT_TEST) / run_integration_tests	1m 7s
Integration Tests (SHIP_PLACEMENT_TEST) / run_integration_tests	1m 1s
	7m 23s

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