Bunsen Burner (#18361)

* bunsen burner port

* reacting reagents returns if it did

* small fixes

* new bunsen burner icon

* fixes

* deconstruction fixing

* smaller range

* code review

code/modules/reagents/holder/distilling.dm

@@ -21,3 +21,4 @@
 	for(var/decl/chemical_reaction/C as anything in effect_reactions)
 		C.post_reaction(src)
 	update_total()
+	return TRUE

code/modules/reagents/holder/holder.dm

@@ -105,6 +105,7 @@
 		SEND_SIGNAL(src, COMSIG_UNITTEST_DATA, list(C))
 		#endif
 	update_total()
+	return TRUE
 
 /* Holder-to-chemical */