CherryEngine传入 customSyntax 无效？

Prerequisites

• There isn't an existing issue that reports the same bug to avoid duplicates.
• The provided information offers a minimal reproducible example of the bug.
• For Q&A, please open a GitHub Discussion instead.

Describe the Bug

const myBlockHook = Cherry.createSyntaxHook('myBlock', Cherry.constants.HOOKS_TYPE_LIST.PAR, {
  needCache: true, // 表明要使用缓存，也是实现排他的必要操作
  makeHtml(str) {
    const that = this;
    return str.replace(this.RULE.reg, function (whole, m1) {
      const result = `\n<div style="border: 1px solid;border-radius: 15px;background: gold;">${m1}</div>\n`;
      return that.pushCache(result); // 将结果转成占位符
    });
  },
  rule(str) {
    return { reg: /\n\+\+(\n[\s\S]+?\n)\+\+\n/g };
  },
});

const cherryEngineInstance = new CherryEngine({
    engine: {
      customSyntax: {
        // importHook: {
        //   syntaxClass: imgHook, // 将自定义语法对象挂载到 importHook.syntaxClass上
        //   force: true, // true： 当cherry自带的语法中也有一个“importHook”时，用自定义的语法覆盖默认语法； false：不覆盖
        //   before: 'fontEmphasis', // 定义该自定义语法的执行顺序，当前例子表明在加粗/斜体语法前执行该自定义语法
        // },
        importHook: {
          syntaxClass: myBlockHook, // 将自定义语法对象挂载到 importHook.syntaxClass上
          // force: true, // true： 当cherry自带的语法中也有一个“importHook”时，用自定义的语法覆盖默认语法； false：不覆盖
          before: 'blockquote', // 定义该自定义语法的执行顺序，当前例子表明在加粗/斜体语法前执行该自定义语法
        },
      },
    },
  })

cherryEngineInstance.makeHtml(`\n++\n XXX \n++\n`);

Reproduction Steps

No response

System Information

No response

Contributing

None

Start by reproducing the supplied CherryEngine construction and makeHtml call, then trace how engine.customSyntax.importHook registers myBlockHook and applies its before ordering. Done means determining why the custom syntax is ineffective and confirming that the sample ++...++ input renders the intended custom block.