fix(compiler-core): fix handling of delimiterOpen in VPre (#11915)

close #11913

Author: edison1105

Diff for: packages/compiler-core/__tests__/parse.spec.ts

@@ -2019,6 +2019,21 @@ describe('compiler: parse', () => {
           children: [{ type: NodeTypes.TEXT, content: `{{ number ` }],
         },
       ])
+
+      const ast3 = baseParse(`<div v-pre><textarea>{{ foo </textarea></div>`, {
+        parseMode: 'html',
+      })
+      expect((ast3.children[0] as ElementNode).children).toMatchObject([
+        {
+          type: NodeTypes.ELEMENT,
+          children: [
+            {
+              type: NodeTypes.TEXT,
+              content: `{{ foo `,
+            },
+          ],
+        },
+      ])
     })
 
     test('self-closing v-pre', () => {

Diff for: packages/compiler-core/src/tokenizer.ts

@@ -438,7 +438,7 @@ export default class Tokenizer {
         // We have to parse entities in <title> and <textarea> tags.
         if (!__BROWSER__ && c === CharCodes.Amp) {
           this.startEntity()
-        } else if (c === this.delimiterOpen[0]) {
+        } else if (!this.inVPre && c === this.delimiterOpen[0]) {
           // We also need to handle interpolation
           this.state = State.InterpolationOpen
           this.delimiterIndex = 0