[INT-6476] ATS SAP-SF ICC T2 Assessment Doc improvements

[sourabh-stackone]

Context - T2 ATS SAP SF Assessment Doc

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Summary by cubic

Simplified the SAP SuccessFactors ATS Assessment (ICC T2) doc to focus on the recruiter flow and current UI. Addresses INT-6476 by updating the T2 Integration Configuration & Concepts doc for assessment.

• Refactors
  • Reduced the guide to three steps: associate assessment to a Job Requisition, auto-trigger on stage move, and view results in the Assessment portlet.
  • Removed outdated setup content (provisioning, API login exceptions, vendor packages, event subscriptions, template/permission setup, OData cache refresh).
  • Replaced screenshots with current UI for initiation and results.

[Copilot]

Pull Request Overview

This PR simplifies the SAP SuccessFactors assessment integration documentation by removing extensive setup steps and focusing on the core assessment association and usage workflow. The changes streamline the documentation to be more concise and user-friendly.

• Removed detailed setup sections covering permissions, API login exceptions, vendor management, event configuration, and template management
• Updated image references to show more current UI screenshots
• Simplified the content to focus on associating assessments to job requisitions and checking results

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