navigation module: remove direct @remix-run/router dependency

## Context

`@equinor/fusion-framework-module-navigation` still depends on `@remix-run/router` directly in:

- `packages/modules/navigation/src/NavigationProvider.interface.ts`
- `packages/modules/navigation/src/NavigationProvider.ts`

Both files carry the same TODO:

```ts
// TODO: Remove @remix-run/router dependency once all apps have migrated to @equinor/fusion-framework-react-router
```

## Task

- Confirm all consuming apps/cookbooks have migrated to `@equinor/fusion-framework-react-router`.
- Remove the direct `@remix-run/router` dependency and related types from `NavigationProvider` and its interface, replacing them with the framework's own router abstractions where needed.
- Update the package's `package.json` dependencies accordingly.

## Files

- `packages/modules/navigation/src/NavigationProvider.interface.ts` (line 1)
- `packages/modules/navigation/src/NavigationProvider.ts` (line 1)

Check consuming apps and cookbooks first to confirm they use @equinor/fusion-framework-react-router. Then inspect the TODOs and router types in packages/modules/navigation/src/NavigationProvider.interface.ts and NavigationProvider.ts, followed by the package.json dependencies. Done means the direct @remix-run/router dependency and related types are removed while the navigation module uses the framework router abstractions.

Written by the indexing model from the issue text.