server: refactor TSO server forwarding function

[JmPotato]

What problem does this PR solve?

Issue Number: ref #4399.

What is changed and how does it work?

Refactor TSO server forwarding function to eliminate the passing of parameters flying everywhere.

Check List

Tests

• Unit test
• Integration test

Release note

None.

[codecov]

Codecov Report

Attention: Patch coverage is 91.66667% with 7 lines in your changes missing coverage. Please review.

Project coverage is 76.34%. Comparing base (6504311) to head (b8c1b4b).
Report is 2 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #9096      +/-   ##
==========================================
- Coverage   76.34%   76.34%   -0.01%     
==========================================
  Files         468      468              
  Lines       71729    71727       -2     
==========================================
- Hits        54765    54759       -6     
+ Misses      13550    13545       -5     
- Partials     3414     3423       +9     

Flag	Coverage Δ
unittests	76.34% <91.66%> (-0.01%)	⬇️

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[ti-chi-bot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: okJiang, rleungx

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• OWNERS [rleungx]

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[ti-chi-bot]

[LGTM Timeline notifier]

Timeline:

• 2025-02-24 09:10:06.082913627 +0000 UTC m=+260554.036071886: ☑️ agreed by rleungx.
• 2025-02-25 09:02:52.572776403 +0000 UTC m=+346520.525934664: ☑️ agreed by okJiang.