558 update attach document button functionality

[ekim1707]

Description

updated behavior or document attachment between room and AskPlayground reactor

Changes Made

• allowedFileTypes array comes in through themedb instead of being hardcoded in FE
• all files are looped through, where their extensions are obtained, and they are compared to the file type array
• file type array is normalized for matching

How to Test

1. Set allowedFileTypes in themedb backend
2. Upload attachment and ask Playground something ("describe the document")
3. Look in UI File Explorer to see if all files attached
4. Look in Network of browser to see if only filtered files were passed to AskPlayground

Notes

• The functions are built to be forgiving to the extension names that come through. For example, this._theme.allowedFileTypes could be ["pdf", ".PDF", "", " png "], and this would eventually be reduced to { ".pdf", ".png" } for the final file extension checks. However, simplicity and consistency for the file type array should be stressed. A good example of a simple array in theme db would be [“pdf”, “png”, “jpg”].
• Both jpg and jpeg must be explicitly stated in the array. A good example of which would be ["pdf", "png", "jpg", "jpeg"].

[github-actions]

@CodiumAI-Agent /update_changelog