Add system prompt and tool permission to agent2 (#35781)

Release Notes:

- N/A

---------

Co-authored-by: Ben Brandt <benjamin.j.brandt@gmail.com>
Co-authored-by: Max Brunsfeld <maxbrunsfeld@gmail.com>

crates/agent_servers/src/acp/v1.rs

@@ -210,7 +210,7 @@ impl acp::Client for ClientDelegate {
             .context("Failed to get session")?
             .thread
             .update(cx, |thread, cx| {
-                thread.request_tool_call_permission(arguments.tool_call, arguments.options, cx)
+                thread.request_tool_call_authorization(arguments.tool_call, arguments.options, cx)
             })?;
 
         let result = rx.await;