refactor: fix implementation of SFC :slotted id handling

fix #2892

packages/runtime-core/src/index.ts

@@ -227,12 +227,11 @@ export { HMRRuntime } from './hmr'
 
 // For compiler generated code
 // should sync with '@vue/compiler-core/src/runtimeConstants.ts'
-export { withCtx } from './helpers/withRenderContext'
+export { withCtx, setScopeId } from './componentRenderContext'
 export { renderList } from './helpers/renderList'
 export { toHandlers } from './helpers/toHandlers'
 export { renderSlot } from './helpers/renderSlot'
 export { createSlots } from './helpers/createSlots'
-export { pushScopeId, popScopeId, withScopeId } from './helpers/scopeId'
 export {
   openBlock,
   createBlock,
@@ -257,10 +256,8 @@ export { transformVNodeArgs } from './vnode'
 // change without notice between versions. User code should never rely on them.
 
 import { createComponentInstance, setupComponent } from './component'
-import {
-  renderComponentRoot,
-  setCurrentRenderingInstance
-} from './componentRenderUtils'
+import { renderComponentRoot } from './componentRenderUtils'
+import { setCurrentRenderingInstance } from './componentRenderContext'
 import { isVNode, normalizeVNode } from './vnode'
 
 const _ssrUtils = {