The separate runtime MOCK switch on the map screen is removed.
Now the admin-only settings toggle (MOCK_API_FEATURE_ENABLED) is the
single control point — turning it on activates mock mode immediately,
turning it off deactivates it.
- useTrainMenu: remove mockApiEnabled/setMockApiEnabled state;
mockApiConfig now derives from mockApiFeatureEnabled alone
- WebView: use mockApiFeatureEnabled for key prop (triggers reload)
- Apps.tsx: remove MockApiToggle import and JSX usage
Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
