chore: remove useLegacyThreadMessageJump

[ggazzo]

it removes duplication of tasks to jump to message, hopefully remove some odd flaky situations

https://rocketchat.atlassian.net/browse/FLAKY-1211

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ARCH-1528

[dionisio-bot]

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

• This PR is targeting the wrong base branch. It should target 7.6.0, but it targets 7.5.0

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Latest commit: b6dc3b9

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[github-actions]

PR Preview Action v1.6.0
🚀 View preview at https://RocketChat.github.io/Rocket.Chat/pr-preview/pr-35636/
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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 59.71%. Comparing base (0cc6e9e) to head (b6dc3b9).
Report is 1 commits behind head on develop.

Additional details and impacted files

@@             Coverage Diff             @@
##           develop   #35636      +/-   ##
===========================================
- Coverage    59.72%   59.71%   -0.01%     
===========================================
  Files         2829     2829              
  Lines        68243    68226      -17     
  Branches     15126    15124       -2     
===========================================
- Hits         40759    40744      -15     
+ Misses       24876    24874       -2     
  Partials      2608     2608              

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[dougfabris]

I can confirm useLegacyThreadMessageJump is not being used apart from ThreadMessageList. The message jump is working normally after the removal because MessageListProvider already uses the legacyJumpToMessage