stop gc before shutdown homestore

[JacksonYao287]

No description provided.

[codecov-commenter]

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Codecov Report

❌ Patch coverage is 10.00000% with 9 lines in your changes missing coverage. Please review.
✅ Project coverage is 56.68%. Comparing base (1746bcc) to head (b554c1e).
⚠️ Report is 145 commits behind head on main.

Files with missing lines	Patch %	Lines
...ib/homestore_backend/replication_state_machine.cpp	0.00%	9 Missing ⚠️
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Additional details and impacted files

@@            Coverage Diff             @@
##             main     #384      +/-   ##
==========================================
- Coverage   63.15%   56.68%   -6.48%     
==========================================
  Files          32       35       +3     
  Lines        1900     4864    +2964     
  Branches      204      612     +408     
==========================================
+ Hits         1200     2757    +1557     
- Misses        600     1814    +1214     
- Partials      100      293     +193     

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[Besroy]

LGTM