fix(RHOAIENG-25120): remove kueue as mandatory in RayCluster

[chipspeak]

Issue link

Jira Link

What changes have been made

Verification steps

• With appropriate Kueue config (a cluster queue and local queue CR on your cluster) create a RayCluster with an invalid label. This should return the VAP error. In this instance, it's not our code blocking the creation but the VAP itself.
• With the above but leaving local queue blank or set to an existing one, resource should create without issue.

Checks

• I've made sure the tests are passing.
• Testing Strategy
  • Unit tests
  • Manual tests
  • Testing is not required for this change

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 92.48%. Comparing base (68d1f6c) to head (859b562).

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #832   +/-   ##
=======================================
  Coverage   92.48%   92.48%           
=======================================
  Files          24       24           
  Lines        1423     1424    +1     
=======================================
+ Hits         1316     1317    +1     
  Misses        107      107           

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[chipspeak]

/hold

[laurafitzgerald]

The changes look good here @chipspeak would you mind adding verification steps, i'm happy to verify it. :)

[kryanbeane]

lgtm!

[openshift-ci]

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