Prevent undo and redo at points when they might break the program

src/DrawingProgram/RectSelectTool.hpp

@@ -14,11 +14,12 @@ class RectSelectTool {
         void tool_update();
         void draw(SkCanvas* canvas, const DrawData& drawData);
         void reset_tool();
+
+        bool prevent_undo_or_redo();
     private:
         struct RectSelectControls {
             int selectionMode = 0;
 
-
             CoordSpaceHelper coords;
 
             Vector2f selectStartAt;