Stops anomalies from running off during CI and causing a flaky mapping nearstation error (#89796)

## About The Pull Request

The anomaly ruin has several anomalies floating in space. They have a
nearstation area on their tile, but the problem is there is a chance
that they can move before the mapping_nearstation unit test completes,
causing them to be in a non-area and ruining the run.

This PR just ensures that they stay in place during unit tests.

code/game/objects/effects/anomalies/_anomalies.dm

@@ -75,8 +75,10 @@
 	return ..()
 
 /obj/effect/anomaly/proc/anomalyEffect(seconds_per_tick)
+#ifndef UNIT_TESTS // These might move away during a CI run and cause a flaky mapping nearstation errors
 	if(SPT_PROB(move_chance, seconds_per_tick))
 		move_anomaly()
+#endif
 
 /// Move in a direction
 /obj/effect/anomaly/proc/move_anomaly()

code/game/objects/effects/anomalies/anomalies_hallucination.dm

@@ -85,8 +85,10 @@
 	)
 
 /obj/effect/anomaly/hallucination/decoy/anomalyEffect(seconds_per_tick)
+#ifndef UNIT_TESTS // These might move away during a CI run and cause a flaky mapping nearstation errors
 	if(SPT_PROB(move_chance, seconds_per_tick))
 		move_anomaly()
+#endif
 
 /obj/effect/anomaly/hallucination/decoy/analyzer_act(mob/living/user, obj/item/analyzer/tool)
 	to_chat(user, span_notice("You activate [tool]. [replacetext(report_text, "%TOOL%", "[tool]")]"))