update API reports for TypeScript 5.6

Signed-off-by: Patrik Oldsberg <poldsberg@gmail.com>

plugins/devtools/report-alpha.api.md

@@ -82,7 +82,7 @@ const _default: FrontendPlugin<
       params: {
         defaultPath: string;
         loader: () => Promise<JSX.Element>;
-        routeRef?: RouteRef<AnyRouteRefParams> | undefined;
+        routeRef?: RouteRef;
       };
     }>;
   }

plugins/devtools/report.api.md

@@ -3,8 +3,6 @@
 > Do not edit this file. It is a report generated by [API Extractor](https://api-extractor.com/).
 
 ```ts
-/// <reference types="react" />
-
 import { BackstagePlugin } from '@backstage/core-plugin-api';
 import { default as default_2 } from 'react';
 import { JSX as JSX_2 } from 'react';