fix: deep copy labels and annotations in SyncPodToGs

[chrisliu1995]

No description provided.

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[codecov]

Codecov Report

❌ Patch coverage is 66.66667% with 2 lines in your changes missing coverage. Please review.
✅ Project coverage is 40.77%. Comparing base (206e756) to head (379cf6e).
⚠️ Report is 1 commits behind head on master.

Files with missing lines	Patch %	Lines
pkg/controllers/gameserver/gameserver_manager.go	66.66%	1 Missing and 1 partial ⚠️

Additional details and impacted files

@@           Coverage Diff           @@
##           master     #329   +/-   ##
=======================================
  Coverage   40.76%   40.77%           
=======================================
  Files         112      112           
  Lines       12544    12548    +4     
=======================================
+ Hits         5114     5116    +2     
- Misses       7019     7020    +1     
- Partials      411      412    +1     

Flag	Coverage Δ
unittests	40.77% <66.66%> (+<0.01%)	⬆️

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