fix: force UI to use IPv4 (127.0.0.1) for API endpoints

Previously, the API endpoint was defined using `localhost`, which could resolve to the IPv6 address `::1`.
This caused issues because the Portmaster core service is listening on `127.0.0.1:817` and only fast-tracking connections to that specific IPv4 address.

desktop/angular/src/main.ts

@@ -80,8 +80,8 @@ if (location.pathname !== "/prompt") {
     providers: [
       provideHttpClient(),
       importProvidersFrom(PortmasterAPIModule.forRoot({
-        websocketAPI: "ws://localhost:817/api/database/v1",
-        httpAPI: "http://localhost:817/api"
+        websocketAPI: "ws://127.0.0.1:817/api/database/v1",
+        httpAPI: "http://127.0.0.1:817/api"
       })),
       NotificationsService,
       {