Avoid name collision between highlight variable and function

gymkhana/addons/escoria-ui-return-monkey-island/esc_item_with_tooltip.gd

@@ -25,7 +25,7 @@ export(Array) var target_when_selected_action_is_in = []
 
 var outline: ItemOutline
 
-var highlight: bool
+var isHighlighted: bool
 var lastHighlightState: bool
 
 var active: bool
@@ -57,16 +57,16 @@ func _process(_delta) -> void:
 	if(is_interactive == false):
 		return
 	
-	if highlight != lastHighlightState:
-		if highlight:
+	if isHighlighted != lastHighlightState:
+		if isHighlighted:
 			outline.show()
 		else:
 			outline.hide()
-		lastHighlightState = highlight
+		lastHighlightState = isHighlighted
 	pass
 
 func highlight(value: bool):
-	highlight = value
+	isHighlighted = value
 
 func set_tooltip(action: String, text: String):
 	set(action + "_text", text)