fix: TypeScript trpc types (#73)

This PR fix type errors reported in
#51

closed #51

Author: nirtamir2

templates/react/file-router/src/routes/__root.tsx.ejs

@@ -11,13 +11,14 @@ import appCss from '../styles.css?url'
 <% } %><% if (addOnEnabled["tanstack-query"]) { %>
 import type { QueryClient } from '@tanstack/react-query'
 <% if (addOnEnabled.tRPC) { %>
-import { TRPCRouter } from '@/integrations/trpc/router'
+import type { TRPCRouter } from '@/integrations/trpc/router'
+import type { TRPCOptionsProxy } from '@trpc/tanstack-react-query'
 <% } %>
 
 interface MyRouterContext {
   queryClient: QueryClient
   <% if (addOnEnabled.tRPC) { %>
-  trpc: TRPCRouter
+  trpc: TRPCOptionsProxy<TRPCRouter>
   <% } %>
 }<% } %>
 
@@ -78,4 +79,4 @@ function RootDocument({ children }: { children: React.ReactNode }) {
     </html>
   )
 }
-<% } %>
+<% } %>