fix: add customShapes in Graphics.js and fix unit test error

Author: VANSH3104

src/core/p5.Graphics.js

@@ -672,7 +672,7 @@ function graphics(p5, fn){
    * </div>
    */
   p5.Graphics = Graphics;
-  
+
   // Shapes
   primitives2D(p5, p5.Graphics.prototype);
   attributes(p5, p5.Graphics.prototype);