cmd: fixed loaded keys ordering

[pinebit]

In create cluster using --split-keys charon loads keystores in unordered fashion. In other places we apply SequencedKeys() that sorts the keys by index. Applied the same logic to create cluster implementation.

category: bug
ticket: none

[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

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 57.41%. Comparing base (aa7b9fd) to head (e961535).

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #3524   +/-   ##
=======================================
  Coverage   57.40%   57.41%           
=======================================
  Files         217      217           
  Lines       32289    32289           
=======================================
+ Hits        18536    18539    +3     
  Misses      11839    11839           
+ Partials     1914     1911    -3     

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