feat: add BUDGET_TEAM to For Review tab access

[rajohnson90]

What changed

Added BUDGET_TEAM role to the list of roles that can access the "For Review" tab on the agreements page. Previously only REVIEWER_APPROVER and SUPER_USER had access.

frontend/src/pages/agreements/list/AgreementsTabs.jsx

• Updated displayReviewTab logic to include USER_ROLES.BUDGET_TEAM check
• Updated comment to reflect all three authorized roles

frontend/src/pages/agreements/list/AgreementTabs.test.jsx

• Added test case "does render for budget team" verifying BUDGET_TEAM users see the For Review tab
• Test follows existing pattern for SUPER_USER and REVIEWER_APPROVER tests

Issue

#5615

How to test

1. Unit tests:

   cd frontend
   npm test -- AgreementTabs.test.jsx --run

2. Manual verification:

   • Log in as a user with BUDGET_TEAM role
   • Navigate to /agreements
   • Verify the "For Review" tab appears alongside "All Agreements" and "My Agreements"
   • Log in as a user without BUDGET_TEAM/REVIEWER_APPROVER/SUPER_USER roles
   • Verify the "For Review" tab does not appear

A11y impact

• No accessibility-impacting changes in this PR
• Accessibility changes included and validated against WCAG 2.1 AA intent
• Any temporary suppression includes A11Y-SUPPRESSION metadata (owner, expires, rationale)

Screenshots

Definition of Done Checklist

• OESA: Code refactored for clarity
• OESA: Dependency rules followed
• Automated unit tests updated and passed
• Automated integration tests updated and passed
• Automated quality tests updated and passed
• Automated load tests updated and passed
• Automated a11y tests updated and passed
• Automated security tests updated and passed
• 90%+ Code coverage achieved
• Form validations updated

Links

#5615

[github-actions]

🎉 This PR is included in version 1.391.0 🎉

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