fix: change _teleportTargets from an array to a Set to avoid duplicate collections

Author: linzhe141

packages/runtime-core/src/component.ts

@@ -1273,5 +1273,5 @@ export interface ComponentCustomElementInterface {
   /**
    * @internal attached by the nested Teleport when shadowRoot is false.
    */
-  _teleportTargets?: RendererElement[]
+  _teleportTargets?: Set<RendererElement>
 }

packages/runtime-core/src/components/Teleport.ts

@@ -147,8 +147,8 @@ export const TeleportImpl = {
           if (parentComponent && parentComponent.isCE) {
             ;(
               parentComponent.ce!._teleportTargets ||
-              (parentComponent.ce!._teleportTargets = [])
-            ).push(target)
+              (parentComponent.ce!._teleportTargets = new Set())
+            ).add(target)
           }
 
           if (!disabled) {

packages/runtime-dom/src/apiCustomElement.ts

@@ -224,7 +224,7 @@ export class VueElement
   /**
    * @internal
    */
-  _teleportTargets?: HTMLElement[]
+  _teleportTargets?: Set<HTMLElement>
 
   private _connected = false
   private _resolved = false