Update babylon.arcRotateCamera.ts

Fixing collision

src/Cameras/babylon.arcRotateCamera.ts

@@ -549,7 +549,7 @@
             if (!collidedMesh) {
                 this._previousPosition.copyFrom(this.position);
             } else {
-                this.setPosition(this.position);
+                this.setPosition(newPosition);
 
                 if (this.onCollide) {
                     this.onCollide(collidedMesh);
@@ -669,4 +669,4 @@
             return serializationObject;
         }
     }
-} 
+}