chore: Virtualized main room message list

[MartinSchoeler]

Proposed changes (including videos or screenshots)

Proof of concept of a MessageList component virtualization using Tanstack virtual

Known issues

• Jump to message behaving erratically or not working at all
• Sometimes the scroll position flickers quickly while loading more messages
• When changing channels the scroll position is not recovered

No virtualization
https://github.com/user-attachments/assets/9aeb722c-cb75-4d4d-b091-d28593be2234

With virtualization
https://github.com/user-attachments/assets/cc2a1b64-cbc7-4b63-89f0-7e47c80001a4

Issue(s)

closes #31
CORE-1505

[dionisio-bot]

Looks like this PR is not ready to merge, because of the following issues:

• This PR has conflicts, please resolve them before merging
• This PR is missing the 'stat: QA assured' label
• This PR is not mergeable
• This PR is targeting the wrong base branch. It should target 8.5.0, but it targets 8.4.0

Please fix the issues and try again

If you have any trouble, please check the PR guidelines

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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 70.91%. Comparing base (692a891) to head (a0d7877).
⚠️ Report is 34 commits behind head on develop.

Additional details and impacted files

@@             Coverage Diff             @@
##           develop   #39490      +/-   ##
===========================================
+ Coverage    70.87%   70.91%   +0.04%     
===========================================
  Files         3196     3197       +1     
  Lines       113288   113321      +33     
  Branches     20531    20552      +21     
===========================================
+ Hits         80294    80364      +70     
+ Misses       30943    30912      -31     
+ Partials      2051     2045       -6     

Flag	Coverage Δ
unit	71.67% <ø> (+0.07%)	⬆️

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