perf(backend): improve streaming api performance

[syuilo]

What

ストリーミングAPIにおけるノート受信時の処理を効率化した

Why

Additional info (optional)

Checklist

• Read the contribution guide
• Test working in a local environment
• (If needed) Add story of storybook
• (If needed) Update CHANGELOG.md
• (If possible) Add tests

[codecov]

Codecov Report

Attention: 22 lines in your changes are missing coverage. Please review.

Comparison is base (329830e) 79.27% compared to head (7b69f83) 79.31%.

Additional details and impacted files

@@             Coverage Diff             @@
##           develop   #12033      +/-   ##
===========================================
+ Coverage    79.27%   79.31%   +0.03%     
===========================================
  Files          930      931       +1     
  Lines        99412    99461      +49     
  Branches      8084     8074      -10     
===========================================
+ Hits         78812    78886      +74     
+ Misses       20600    20575      -25     

Files	Coverage Δ
packages/backend/src/core/NoteCreateService.ts	89.18% <100.00%> (ø)
...ges/backend/src/core/entities/NoteEntityService.ts	88.31% <100.00%> (+0.07%)	⬆️
.../src/server/api/stream/channels/global-timeline.ts	95.57% <60.00%> (+3.01%)	⬆️
...d/src/server/api/stream/channels/local-timeline.ts	95.53% <60.00%> (+0.53%)	⬆️
...ackend/src/server/api/stream/channels/user-list.ts	96.68% <81.81%> (+3.52%)	⬆️
...nd/src/server/api/stream/channels/home-timeline.ts	93.69% <66.66%> (+3.44%)	⬆️
.../src/server/api/stream/channels/hybrid-timeline.ts	95.34% <66.66%> (+4.56%)	⬆️
.../backend/src/server/api/stream/channels/channel.ts	32.53% <0.00%> (+2.85%)	⬆️
.../backend/src/server/api/stream/channels/hashtag.ts	31.81% <0.00%> (+0.70%)	⬆️

... and 6 files with indirect coverage changes

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