fix(runtime-core): avoid unmount teleport's children multiple times (#3499)

fix #3497

packages/runtime-core/src/renderer.ts

@@ -2096,7 +2096,16 @@ function baseCreateRenderer(
         invokeDirectiveHook(vnode, null, parentComponent, 'beforeUnmount')
       }
 
-      if (
+      if (shapeFlag & ShapeFlags.TELEPORT) {
+        ;(vnode.type as typeof TeleportImpl).remove(
+          vnode,
+          parentComponent,
+          parentSuspense,
+          optimized,
+          internals,
+          doRemove
+        )
+      } else if (
         dynamicChildren &&
         // #1153: fast path should not be taken for non-stable (v-for) fragments
         (type !== Fragment ||
@@ -2119,17 +2128,6 @@ function baseCreateRenderer(
         unmountChildren(children as VNode[], parentComponent, parentSuspense)
       }
 
-      if (shapeFlag & ShapeFlags.TELEPORT) {
-        ;(vnode.type as typeof TeleportImpl).remove(
-          vnode,
-          parentComponent,
-          parentSuspense,
-          optimized,
-          internals,
-          doRemove
-        )
-      }
-
       if (doRemove) {
         remove(vnode)
       }