supports_streaming_tools member (#44753)

Release Notes:

- N/A

crates/cloud_llm_client/src/cloud_llm_client.rs

@@ -371,6 +371,8 @@ pub struct LanguageModel {
     pub supports_images: bool,
     pub supports_thinking: bool,
     pub supports_max_mode: bool,
+    #[serde(default)]
+    pub supports_streaming_tools: bool,
     // only used by OpenAI and xAI
     #[serde(default)]
     pub supports_parallel_tool_calls: bool,