SHARED(Frontend): useBlocker is no longer marked as unstable, modify import accordingly

Author: pkoivisto

frontend/packages/shared/src/hooks/useNavigationProtection/useNavigationProtection.ts

@@ -1,5 +1,5 @@
 import { useCallback, useEffect } from 'react';
-import { Location, unstable_useBlocker as useBlocker } from 'react-router-dom';
+import { Location, useBlocker } from 'react-router-dom';
 
 export const useNavigationProtection = (
   when: boolean,