fix: ensure backwards compat for pre-compiled sfc components

fix #3493

packages/runtime-core/src/componentRenderContext.ts

@@ -32,10 +32,25 @@ export function setCurrentRenderingInstance(
  * Set scope id when creating hoisted vnodes.
  * @private compiler helper
  */
-export function setScopeId(id: string | null) {
+export function pushScopeId(id: string | null) {
   currentScopeId = id
 }
 
+/**
+ * Technically we no longer need this after 3.0.8 but we need to keep the same
+ * API for backwards compat w/ code generated by compilers.
+ * @private
+ */
+export function popScopeId() {
+  currentScopeId = null
+}
+
+/**
+ * Only for backwards compat
+ * @private
+ */
+export const withScopeId = (_id: string) => withCtx
+
 /**
  * Wrap a slot function to memoize current rendering instance
  * @private compiler helper