Multiple errors in flaky test mapping_nearstation_test

[github-actions]

Flaky tests were detected in this test run. This means that there was a failure that was cleared when the tests were simply restarted.
Failures:

mapping_nearstation_test: 160, 90, 3: /obj/effect/decal/cleanable/garbage with area of type /area/space at code/modules/unit_tests/mapping_nearstation_test.dm:31
mapping_nearstation_test: Movable Atom located without a proper area. Please verify they are supposed to be there. If they are correct, change the area to /area/space/nearstation (or the correct surrounding type). at code/modules/unit_tests/mapping_nearstation_test.dm:40