feat(react-router): re-export useBlocker and useBeforeUnload (#5181)

Closes: equinor/fusion#888

Author: odinr

.changeset/react-router_add-useblocker-usebeforeunload.md

@@ -0,0 +1,9 @@
+---
+"@equinor/fusion-framework-react-router": minor
+---
+
+Re-export `useBlocker` and `useBeforeUnload` from `react-router` so consumers migrating from `react-router-dom` don't need a direct dependency on `react-router` for these hooks.
+
+Thanks @edmondbaloku
+
+Closes: https://github.com/equinor/fusion/issues/888

packages/react/router/src/index.ts

@@ -39,6 +39,8 @@ export {
   type PathParam,
   type SetURLSearchParams,
   useActionData,
+  useBeforeUnload,
+  useBlocker,
   useFormAction,
   useLocation,
   useLoaderData,