Fixing issue when cloning LineMesh with CreationOptions (#16762)

When cloning a LineMesh, if the cloning is using MeshCloneOptions,
LineMesh will not clone correctly because it will not update the source
of the clone, and it will use the parent itself. This updates the
function to handle MeshCloneOptions the same way that mesh.ts->clone
does, where there are two code paths depending if parent is a Node or
MeshCloneOptions.

Author: VicenteCartas

packages/dev/core/src/Meshes/linesMesh.ts

@@ -10,6 +10,7 @@ import { Material } from "../Materials/material";
 import type { IShaderMaterialOptions } from "../Materials/shaderMaterial";
 import { ShaderMaterial } from "../Materials/shaderMaterial";
 import type { Effect } from "../Materials/effect";
+import type { MeshCreationOptions } from "./mesh";
 import { ShaderLanguage } from "core/Materials/shaderLanguage";
 
 Mesh._LinesMeshParser = (parsedMesh: any, scene: Scene): Mesh => {
@@ -250,8 +251,15 @@ export class LinesMesh extends Mesh {
      * @param doNotCloneChildren if set to true, none of the mesh children are cloned (false by default)
      * @returns the new mesh
      */
-    public override clone(name: string, newParent: Nullable<Node> = null, doNotCloneChildren?: boolean): LinesMesh {
-        return new LinesMesh(name, this.getScene(), newParent, this, doNotCloneChildren);
+    public override clone(name: string, newParent: Nullable<Node> | MeshCreationOptions = null, doNotCloneChildren?: boolean): LinesMesh {
+        if (newParent && (newParent as Node)._addToSceneRootNodes === undefined) {
+            const createOptions = newParent as MeshCreationOptions;
+            createOptions.source = this;
+
+            return new LinesMesh(name, this.getScene(), createOptions.parent, createOptions.source as Nullable<LinesMesh>, createOptions.doNotCloneChildren);
+        }
+
+        return new LinesMesh(name, this.getScene(), newParent as Nullable<Node>, this, doNotCloneChildren);
     }
 
     /**