Fixes boilers slowing themselves (#6177)

# About the pull request
Fixes a bug where boilers would slow themselves by using using toggle
long-range sight when resting
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# Explain why it's good for the game
Bugs are bad
# Testing Photographs and Procedure
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<summary>Screenshots & Videos</summary>

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# Changelog
:cl:
fix: Fixes boilers slowing themselves by using long range sight while
resting.
/:cl:

---------

Co-authored-by: fira <[email protected]>

code/modules/mob/living/carbon/xenomorph/abilities/general_abilities.dm

@@ -296,6 +296,9 @@
 /datum/action/xeno_action/onclick/toggle_long_range/use_ability(atom/target)
 	var/mob/living/carbon/xenomorph/xeno = owner
 
+	if (!xeno.check_state())
+		return
+
 	if(xeno.observed_xeno)
 		return