After turning on `blocking`, the search-meilisearch plug-in cannot search for answers to new questions.

# system introduction
Answer version: 2.2.5
Answer plug-in: the latest version of the plug-in repository
Running method: Build Docker image by yourself, with plug-in
search-meilisearch ：1.2.5

## Build Dockerfile
```
FROM apache/answer as answer-builder

RUN apk --no-cache add \
build-base git bash nodejs npm go && \
npm install -g pnpm

RUN answer build \
--with github.com/apache/incubator-answer-plugins/search-meilisearch \
--with github.com/apache/incubator-answer-plugins/cache-redis \
--with github.com/apache/incubator-answer-plugins/storage-s3 \
--output /usr/bin/new_answer

FROM apache/answer

COPY --from=answer-builder /usr/bin/new_answer /usr/bin/answer
RUN chmod 755 /entrypoint.sh

VOLUME /data
EXPOSE 80
ENTRYPOINT ["/entrypoint.sh"]
```
## Problem description

After the search-meilisearch plugin is configured normally, the meilisearch search function can be used (new questions and replies to questions can be searched), but when `blocking` is turned on, the content of new questions can be searched, but replies to the corresponding questions cannot be searched. When `blocking` is not turned on, both questions and answers can be searched.

### Summary

When the search-meilisearch plugin is turned on with `blocking`, answers to new questions cannot be searched.

从 1.2.5 版本的 search-meilisearch 插件开始，使用提供的 Dockerfile 和 blocking 配置重现该问题。在启用 blocking 的情况下，比较对新问题及其答案进行索引和搜索的结果；当 Meilisearch 在该模式下返回新问题的答案时，即表示完成。

由索引模型根据 Issue 内容生成。