Fix cache issue with mesh disposing

dist/preview release/babylon.max.js

@@ -11365,6 +11365,7 @@ var BABYLON;
             this.releaseSubMeshes();
             // Engine
             this.getScene().getEngine().unbindAllAttributes();
+            this.getScene().getEngine().wipeCaches();
             // Remove from scene
             this.getScene().removeMesh(this);
             if (!doNotRecurse) {

src/Mesh/babylon.abstractMesh.ts

@@ -1175,6 +1175,7 @@
 
             // Engine
             this.getScene().getEngine().unbindAllAttributes();
+            this.getScene().getEngine().wipeCaches();
 
             // Remove from scene
             this.getScene().removeMesh(this);