feat: search by conversation id 2

[jubinsoni]

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Summary

to fix #26643

Screenshots

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Checklist

• This change requires a documentation update, included: Dify Document
• I understand that this PR may be closed in case there was no previous discussion or issues. (This doesn't apply to typos!)
• I've added a test for each change that was introduced, and I tried as much as possible to make a single atomic change.
• I've updated the documentation accordingly.
• I ran make lint and make type-check (backend) and cd web && npx lint-staged (frontend) to appease the lint gods

[gemini-code-assist]

Summary of Changes

Hello @jubinsoni, I'm Gemini Code Assist¹! I'm currently reviewing this pull request and will post my feedback shortly. In the meantime, here's a summary to help you and other reviewers quickly get up to speed!

This pull request resolves an identified issue where the existing conversation search mechanism did not support filtering by conversation ID. By modifying the backend API, it now enables users to efficiently locate specific conversations using their unique identifiers, thereby improving the overall search utility and user experience.

Highlights

• Conversation Search Enhancement: The conversation search functionality has been extended to allow users to search for conversations directly by their unique Conversation.id. This is achieved by casting the ID to a string and applying a case-insensitive ilike filter.

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[gemini-code-assist]

Code Review

This pull request adds the ability to search for conversations by their ID. The implementation is functionally correct. However, I've identified a potential performance issue with the new query condition. My review includes a suggestion to optimize the search for cases where a full UUID is provided as the search keyword, which will improve query performance as the number of conversations grows.

[crazywoola]

Please add a test for it as well.