[FIX] add image format validation

[filipemarins]

Proposed changes (including videos or screenshots)

Issue(s)

Steps to test or reproduce

Further comments

Add validation to prevent the 'heic' format to be uploaded on the room and user's avatar.
This format is not supported on the browsers and meteor.

Before:

After:

[guijun13]

As window.Buffer is not a web API, it`s not recommended to create a polyfill. If you are intend to use the window.buffer for the filetype, take a look at https://www.npmjs.com/package/file-type#browser , as using fileTypeFromStream, FileTypeFromBuffer or FileTypeFromBlob.

Changes done

[ggazzo]

I still thinks this is something that the sever should handle @tassoevan wdyt?

[filipemarins]

I still thinks this is something that the sever should handle @tassoevan wdyt?

I believe this is work for both sides because the browser will try to render this image and we will get an error, for now, we don't handle this kind of error and the user doesn't have proper feedback on what is happening. And make a request to server just to validate the format and return feedback to the client will be more expensive than handling it on the front.

A task was created to add validation on backend

[kodiakhq]

This PR currently has a merge conflict. Please resolve this and then re-add the ['stat: ready to merge', 'automerge'] label.

[codecov]

Codecov Report

Merging #25912 (b99e8aa) into develop (fe26bce) will increase coverage by 0.12%.
The diff coverage is 94.44%.

@@             Coverage Diff             @@
##           develop   #25912      +/-   ##
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+ Coverage    38.54%   38.66%   +0.12%     
===========================================
  Files          758      759       +1     
  Lines        18827    18809      -18     
  Branches      1453     1453              
===========================================
+ Hits          7256     7273      +17     
+ Misses       11355    11318      -37     
- Partials       216      218       +2     

Flag	Coverage Δ
e2e	38.66% <94.44%> (+0.12%)	⬆️

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