Reuse conversation cache when streaming edits (#30245)

Release Notes:

- Improved latency when the agent applies edits.

crates/assistant_tools/src/find_path_tool.rs

@@ -7,7 +7,7 @@ use gpui::{
     AnyWindowHandle, App, AppContext, Context, Entity, IntoElement, Task, WeakEntity, Window,
 };
 use language;
-use language_model::{LanguageModel, LanguageModelRequestMessage, LanguageModelToolSchemaFormat};
+use language_model::{LanguageModel, LanguageModelRequest, LanguageModelToolSchemaFormat};
 use project::Project;
 use schemars::JsonSchema;
 use serde::{Deserialize, Serialize};
@@ -73,7 +73,7 @@ impl Tool for FindPathTool {
     fn run(
         self: Arc<Self>,
         input: serde_json::Value,
-        _messages: &[LanguageModelRequestMessage],
+        _request: Arc<LanguageModelRequest>,
         project: Entity<Project>,
         _action_log: Entity<ActionLog>,
         _model: Arc<dyn LanguageModel>,