refactor: useWith -> prefixIdentifiers

packages/compiler-core/src/transforms/vFor.ts

@@ -87,7 +87,7 @@ function parseForExpression(
       RHS.trim(),
       source.indexOf(RHS, LHS.length),
       context,
-      !context.useWith
+      context.prefixIdentifiers
     ),
     value: undefined,
     key: undefined,

packages/compiler-core/src/transforms/vIf.ts

@@ -15,7 +15,7 @@ import { processExpression } from './expression'
 export const transformIf = createStructuralDirectiveTransform(
   /^(if|else|else-if)$/,
   (node, dir, context) => {
-    if (!__BROWSER__ && !context.useWith && dir.exp) {
+    if (!__BROWSER__ && context.prefixIdentifiers && dir.exp) {
       processExpression(dir.exp, context)
     }
     if (dir.name === 'if') {