Gh-3350: Simple fed store fixes

[p29876]

• Simple federated store fixes from Gh-3350: Optimisations for federated POC #3357
• • Missing serializables
• • Add missing view fixing for SeparateResults handler
• • Fix OperationChain mutation
• Optimisations to follow in a separate PR

Related issue

• Resolve Investigate optimisations for federated POC #3350

[codecov]

Codecov Report

Attention: Patch coverage is 88.46154% with 3 lines in your changes missing coverage. Please review.

Project coverage is 68.08%. Comparing base (9a0de1b) to head (76ca077).
Report is 3 commits behind head on develop.

Files with missing lines	Patch %	Lines
...e/operation/handler/FederatedOperationHandler.java	82.35%	3 Missing ⚠️

Additional details and impacted files

@@              Coverage Diff              @@
##             develop    #3358      +/-   ##
=============================================
+ Coverage      68.06%   68.08%   +0.01%     
  Complexity      2596     2596              
=============================================
  Files            957      957              
  Lines          30684    30686       +2     
  Branches        3405     3406       +1     
=============================================
+ Hits           20886    20893       +7     
+ Misses          8314     8311       -3     
+ Partials        1484     1482       -2     

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[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud