fix context decoding issue in Installed component (#563)

remove redundant code

correct encode decode

Co-authored-by: Aleksandr Cupacenko <alcu@danskebank.lt>

frontend/src/App.tsx

@@ -35,7 +35,7 @@ const PageLayout = () => {
 const SyncContext: React.FC = () => {
   const { context } = useParams();
   if (context) {
-    apiService.setCluster(context);
+    apiService.setCluster(decodeURIComponent(context));
   }
 
   return <Outlet />;

frontend/src/pages/Installed.tsx

@@ -21,7 +21,7 @@ function Installed() {
 
   const handleClusterChange = (clusterName: string) => {
     navigate({
-      pathname: `/${clusterName}/installed`,
+      pathname: `/${encodeURIComponent(clusterName)}/installed`,
     });
   };