Reset ruler tool when switching tools with shortcuts

Fixes: #37056
(cherry picked from commit a99a671034866be275bc08ba3d4009c3fb9d8cee)

editor/plugins/canvas_item_editor_plugin.cpp

@@ -2474,9 +2474,10 @@ bool CanvasItemEditor::_gui_input_select(const Ref<InputEvent> &p_event) {
 }
 
 bool CanvasItemEditor::_gui_input_ruler_tool(const Ref<InputEvent> &p_event) {
-
-	if (tool != TOOL_RULER)
+	if (tool != TOOL_RULER) {
+		ruler_tool_active = false;
 		return false;
+	}
 
 	Ref<InputEventMouseButton> b = p_event;
 	Ref<InputEventMouseMotion> m = p_event;