fix: copy claims before modifying for logs

[notfromstatefarm]

Fixes changes introduced in #9947 which caused groups to be deleted from claims

[crenshaw-dev]

lgtm, thanks!

[codecov]

Codecov Report

Merging #10044 (b0a182b) into master (708906d) will decrease coverage by 0.06%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##           master   #10044      +/-   ##
==========================================
- Coverage   45.96%   45.89%   -0.07%     
==========================================
  Files         227      227              
  Lines       27279    27327      +48     
==========================================
+ Hits        12538    12541       +3     
- Misses      13039    13084      +45     
  Partials     1702     1702              

Impacted Files	Coverage Δ
util/grpc/logging.go	58.33% <100.00%> (ø)
util/grpc/useragent.go	45.83% <0.00%> (-10.42%)	⬇️
server/rbacpolicy/rbacpolicy.go	82.35% <0.00%> (-2.43%)	⬇️
pkg/apiclient/grpcproxy.go	0.00% <0.00%> (ø)
...is/applicationset/v1alpha1/applicationset_types.go	34.69% <0.00%> (+2.55%)	⬆️
server/logout/logout.go	84.37% <0.00%> (+6.59%)	⬆️

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