[bug] createComponent singleRoot check should not be true when it has v-for

[yyx990803]

Given this

<Comp v-for="i in 10000" />

Current codegen (the 4th argument true indicates a child component that is also the root of the parent):

return ((_ctx) => {
  const n0 = _createFor(() => (10000), (_ctx0) => {
    const n2 = _createComponent(Comp, null, null, true)
    return n2
  })
  return n0
})()

Expected:

return ((_ctx) => {
  const n0 = _createFor(() => (10000), (_ctx0) => {
-   const n2 = _createComponent(Comp, null, null, true)
+   const n2 = _createComponent(Comp)
    return n2
  })
  return n0
})()

[LittleSound]

Has it been fixed?