[Workspace Roles] Release 1: Auditor role — navigation guards and core workspace pages

[flodnv]

Part of the Workspace Roles project. Depends on Release 0 frontend.

Goal: Allow Auditor members to navigate the workspace settings in read-only mode. Gate every core workspace page — Overview, Members, and Settings — so that write actions are hidden or disabled for Auditors, while the page itself remains accessible.

Overview page (src/pages/workspace/WorkspaceOverviewPage.tsx)

• Check hasPolicyPermission(policy, login, FEATURE.OVERVIEW, FEATURE_ACCESS.WRITE)
• Show the page to anyone with at least read access
• Hide the edit icon / save button for users without write access

Members page (src/pages/workspace/WorkspaceMembersPage.tsx)

• Check hasPolicyPermission(policy, login, FEATURE.MEMBERS, FEATURE_ACCESS.READ) to allow entry
• Disable "Invite member", "Remove", and role-change controls for Auditors (no FEATURE.MEMBERS write access)
• Auditor sees the list but cannot mutate it

Profile / Settings pages

• Remaining workspace-settings pages (currency, description, categories, etc.) that are currently admin-only: confirm they are blocked from Auditor access via hasPolicyPermission(..., FEATURE_ACCESS.WRITE) checks and redirect/hide appropriately

Issue Owner

Current Issue Owner: @Pujan92

[melvin-bot]

Triggered auto assignment to Design team member for new feature review - @dubielzyk-expensify (NewFeature)