feat(Entities): add config file entity views with read-only toggle (Issue #4535)

[ya092]

Description:

Adds the ability to browse entities defined in Core's configuration file (aidial.config.json) directly in the Admin UI. Previously, only API-stored entities were visible, leaving users unable to browse any entities when the admin API URL was not configured. A toggle switch is added to every entity list and detail page (Models, Applications, Interceptors, Toolsets, Routes, Roles, App Runners, and their Assets/Platform counterparts) that switches the view into a read-only config-file mode. When the admin API is configured the toggle is hidden and existing behavior is preserved. The second commit extends the same pattern to Catalog-level entities (Models, Applications, Interceptors), ensuring full coverage across all supported entity types.

Issues:

• Issue [Admin] Add ability to see config file entities #4535

Key Changes:

• apps/ai-dial-admin/src/components/Common/ConfigFilesToggle/ConfigFilesToggle.tsx — new toggle component that switches between API and config-file entity views
• apps/ai-dial-admin/src/components/Common/ConfigFileListSwap/ConfigFileListSwap.tsx — wrapper that conditionally renders the API-backed list or the config-file list based on toggle state
• apps/ai-dial-admin/src/hooks/use-config-file-entity-list.ts — hook for fetching and managing config-file entity lists
• apps/ai-dial-admin/src/constants/config-file-entity-views.ts — constants for all supported config-file entity view types
• apps/ai-dial-admin/src/context/AppContext.tsx — extended to expose the admin API availability flag consumed by all toggle components
• apps/ai-dial-admin/src/server/config-entities/read.ts — server-side config-entity reading extended to cover all new entity types
• apps/ai-dial-admin/src/utils/tabs/utils.ts — tab utility refactored to support config-file read-only tab rendering
• All Catalog-level entity pages (models, applications, interceptors) and their detail pages updated to integrate the toggle and config-file list swap
• All Platform/Assets entity pages and detail pages (platform-models, platform-interceptors, platform-roles, platform-routes, platform-app-runners, assets-applications, assets-toolsets) updated with the same integration

New Components:

• ConfigFilesToggle — toggle switch shown on entity list pages when the admin API is unavailable; switches the page into config-file read-only mode
• ConfigFileListSwap — conditionally renders either the standard API-backed list or the config-file list depending on toggle state
• PageList (Assets/Apps, Assets/Toolsets, Assets/Platform/Models, Assets/Platform/Interceptors, Assets/Platform/Roles, Assets/Platform/Routes, Assets/Platform/AppRunners) — read-only list pages for config-file entities in each area

Checklist:

• the pull request name complies with Conventional Commits
• the pull request name ends with (Issue #4535)

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