Fix acid harness not having item restriction. (#4094)

# About the pull request
fixes: #3744
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# Changelog
:cl:
fix: forbidden all the items beside battery and beakers to avoid
weirdness and bug.
/:cl:

---------

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

code/modules/reagents/chemistry_machinery/acid_harness.dm

@@ -39,6 +39,10 @@
 
 /obj/item/storage/internal/accessory/black_vest/acid_harness
 	storage_slots = 2
+	can_hold = list(
+		/obj/item/reagent_container/glass/beaker,
+		/obj/item/cell,
+	)
 
 /obj/item/clothing/accessory/storage/black_vest/acid_harness
 	name = "A.C.I.D. Harness"