refactor: CCP-5193 reduce user search code

[WalterMoar]

Description

The work for CCP-4940: CSTAR - Fix disabled menu item so that it isn't clickable caused Sonar to identify duplicate code. Recommend that the combined IDIR/BCeID search logic be moved to a single location (user store?) to prevent duplicate code.

Acceptance Criteria

• Maybe rename useUserStore to useUserSearchStore
• Tenant User and Group Member search logic for users only exists in one place
• Simplify the store and service to use a single search(type, value) method

Type of change

refactor: a code change that neither fixes a bug nor adds a feature

Checklist

• I have performed a thorough self-review of the changes in this PR
• The changes are self-explanatory or have comments where needed
• I have checked that documentation is still accurate after these changes
• My changes are covered by the existing tests or tests have been added

---

Thanks for the PR!

Deployments, as required, will be available below:

• Frontend
• Backend
• OpenAPI

Please create PRs in draft mode. Mark as ready to enable:

• Analysis Workflow

After merge, new images are deployed in:

• Merge Workflow

[sonarqubecloud]

Quality Gate passed for 'tenant-management-system'

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
100.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud