[Bug]: Search feature misses important results

The search feature has poor performance. Some important APIs (for example, clientOnly and ParentProps) that should appear in the search results are missing.

Also, there have been requests for the ability to search within normal text and code blocks. This functionality would be helpful for users looking to find examples of specific API usage.

Certain API options, such as deferStream, are also not searchable. This can be addressed by using headings to document API options instead of tables. This is being implemented gradually.

Related issues: (for more context and discussions)

• https://github.com/solidjs/solid-docs/issues/987
• https://github.com/solidjs/solid-docs/issues/109
• https://github.com/solidjs/solid-docs/issues/1364
• https://github.com/solidjs/solid-docs/issues/706 (not directly related to this bug, but about the search engine in general)

検索機能から始め、関連する Issue 987、109、1364、706 を確認して、背景とこれまでの議論を把握します。どの欠落している API、テキストおよびコードブロック、API オプションが対象範囲に含まれるかを判断し、その後、既存の結果を退行させることなく、影響を受けるコンテンツを検索できることを検証します。