fix(Teleport): avoid changing the reference of vnode.dynamicChildren (#3642)

fix #3641

Author: HcySunYang

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

@@ -84,13 +84,13 @@ export const TeleportImpl = {
  } = internals
 
  const disabled = isTeleportDisabled(n2.props)
- const { shapeFlag, children } = n2
+ let { shapeFlag, children, dynamicChildren } = n2
 
  // #3302
  // HMR updated, force full diff
  if (__DEV__ && isHmrUpdating) {
  optimized = false
- n2.dynamicChildren = null
+ dynamicChildren = null
  }
 
  if (n1 == null) {
@@ -146,11 +146,11 @@ export const TeleportImpl = {
  const currentAnchor = wasDisabled ? mainAnchor : targetAnchor
  isSVG = isSVG || isTargetSVG(target)
 
- if (n2.dynamicChildren) {
+ if (dynamicChildren) {
  // fast path when the teleport happens to be a block root
  patchBlockChildren(
  n1.dynamicChildren!,
- n2.dynamicChildren,
+ dynamicChildren,
  currentContainer,
  parentComponent,
  parentSuspense,