Use getRoleBasicInfoById when checking Administrator role

[SujanSanjula96]

Purpose

Use getRoleBasicInfoById instead of getRole method when checking Administrator role to avoid unnecessary DB calls.

Related Issues

wso2/product-is#21496

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 32.02%. Comparing base (a452c28) to head (2caad4d).
Report is 176 commits behind head on master.

Additional details and impacted files

@@           Coverage Diff           @@
##           master    #7131   +/-   ##
=======================================
  Coverage   32.02%   32.02%           
=======================================
  Files          41       41           
  Lines         893      893           
  Branches      220      216    -4     
=======================================
  Hits          286      286           
  Misses        557      557           
  Partials       50       50           

Flag	Coverage Δ
@wso2is/core	32.02% <ø> (ø)

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[wso2-jenkins-bot]

🦋 Changeset detected

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PR builder started
Link: https://github.com/wso2/product-is/actions/runs/11929101696

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PR builder completed
Link: https://github.com/wso2/product-is/actions/runs/11929101696
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[pavinduLakshan]

PR builder completed Link: wso2/product-is/actions/runs/11929101696 Status: failure

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