[router] update generate spec to align with sgl io struct (#11591)

sgl-router/tests/test_openai_routing.rs

@@ -598,15 +598,39 @@ async fn test_unsupported_endpoints() {
     .unwrap();
 
     let generate_request = GenerateRequest {
-        prompt: None,
         text: Some("Hello world".to_string()),
         input_ids: None,
+        input_embeds: None,
+        image_data: None,
+        video_data: None,
+        audio_data: None,
         sampling_params: None,
         stream: false,
-        return_logprob: false,
-        lora_path: None,
-        session_params: None,
+        return_logprob: Some(false),
+        logprob_start_len: None,
+        top_logprobs_num: None,
+        token_ids_logprob: None,
+        return_text_in_logprobs: false,
+        log_metrics: true,
         return_hidden_states: false,
+        modalities: None,
+        session_params: None,
+        lora_path: None,
+        lora_id: None,
+        custom_logit_processor: None,
+        bootstrap_host: None,
+        bootstrap_port: None,
+        bootstrap_room: None,
+        bootstrap_pair_key: None,
+        data_parallel_rank: None,
+        background: false,
+        conversation_id: None,
+        priority: None,
+        extra_key: None,
+        no_logs: false,
+        custom_labels: None,
+        return_bytes: false,
+        return_entropy: false,
         rid: None,
     };