fix: ensure backwards compat for pre-compiled sfc components

fix #3493

packages/compiler-core/__tests__/scopeId.spec.ts

@@ -1,5 +1,5 @@
 import { baseCompile } from '../src/compile'
-import { SET_SCOPE_ID } from '../src/runtimeHelpers'
+import { PUSH_SCOPE_ID, POP_SCOPE_ID } from '../src/runtimeHelpers'
 import { PatchFlags } from '@vue/shared'
 import { genFlagText } from './testUtils'
 
@@ -20,7 +20,7 @@ describe('scopeId compiler support', () => {
       mode: 'module',
       scopeId: 'test'
     })
-    expect(code).toMatch(`default: _withCtx(() => [`)
+    expect(code).toMatch(`default: _withId(() => [`)
     expect(code).toMatchSnapshot()
   })
 
@@ -36,8 +36,8 @@ describe('scopeId compiler support', () => {
         scopeId: 'test'
       }
     )
-    expect(code).toMatch(`foo: _withCtx(({ msg }) => [`)
-    expect(code).toMatch(`bar: _withCtx(() => [`)
+    expect(code).toMatch(`foo: _withId(({ msg }) => [`)
+    expect(code).toMatch(`bar: _withId(() => [`)
     expect(code).toMatchSnapshot()
   })
 
@@ -53,8 +53,8 @@ describe('scopeId compiler support', () => {
         scopeId: 'test'
       }
     )
-    expect(code).toMatch(/name: "foo",\s+fn: _withCtx\(/)
-    expect(code).toMatch(/name: i,\s+fn: _withCtx\(/)
+    expect(code).toMatch(/name: "foo",\s+fn: _withId\(/)
+    expect(code).toMatch(/name: i,\s+fn: _withId\(/)
     expect(code).toMatchSnapshot()
   })
 
@@ -67,18 +67,19 @@ describe('scopeId compiler support', () => {
         hoistStatic: true
       }
     )
-    expect(ast.helpers).toContain(SET_SCOPE_ID)
+    expect(ast.helpers).toContain(PUSH_SCOPE_ID)
+    expect(ast.helpers).toContain(POP_SCOPE_ID)
     expect(ast.hoists.length).toBe(2)
     expect(code).toMatch(
       [
-        `_setScopeId("test")`,
+        `_pushScopeId("test")`,
         `const _hoisted_1 = /*#__PURE__*/_createVNode("div", null, "hello", ${genFlagText(
           PatchFlags.HOISTED
         )})`,
         `const _hoisted_2 = /*#__PURE__*/_createVNode("div", null, "world", ${genFlagText(
           PatchFlags.HOISTED
         )})`,
-        `_setScopeId(null)`
+        `_popScopeId()`
       ].join('\n')
     )
     expect(code).toMatchSnapshot()