message: dev-utils: fix deprecated routes not being wrapped in router
diff: @@ -31,6 +31,7 @@ import {
  AnyApiFactory,
  } from '@backstage/core';
  import SentimentDissatisfiedIcon from '@material-ui/icons/SentimentDissatisfied';
  +import { Routes } from 'react-router';
  // TODO(rugvip): export proper plugin type from core that isn't the plugin class
  type BackstagePlugin = ReturnType<typeof createPlugin>;
  @@ -97,7 +98,7 @@ class DevAppBuilder {
  <AppRouter>
  <SidebarPage>
  {sidebar}
  - {deprecatedAppRoutes}
  + <Routes>{deprecatedAppRoutes}</Routes>
  </SidebarPage>
  </AppRouter>
  </AppProvider>
  