Fix clippy::redundant_clone lint violations (#36558)

This removes around 900 unnecessary clones, ranging from cloning a few
ints all the way to large data structures and images.

A lot of these were fixed using `cargo clippy --fix --workspace
--all-targets`, however it often breaks other lints and needs to be run
again. This was then followed up with some manual fixing.

I understand this is a large diff, but all the changes are pretty
trivial. Rust is doing some heavy lifting here for us. Once I get it up
to speed with main, I'd appreciate this getting merged rather sooner
than later.

Release Notes:

- N/A

crates/agent2/src/tests/mod.rs

@@ -1401,7 +1401,7 @@ async fn test_agent_connection(cx: &mut TestAppContext) {
         let client = Client::new(clock, http_client, cx);
         let user_store = cx.new(|cx| UserStore::new(client.clone(), cx));
         language_model::init(client.clone(), cx);
-        language_models::init(user_store.clone(), client.clone(), cx);
+        language_models::init(user_store, client.clone(), cx);
         Project::init_settings(cx);
         LanguageModelRegistry::test(cx);
         agent_settings::init(cx);
@@ -1854,7 +1854,7 @@ async fn setup(cx: &mut TestAppContext, model: TestModel) -> ThreadTest {
         let client = Client::production(cx);
         let user_store = cx.new(|cx| UserStore::new(client.clone(), cx));
         language_model::init(client.clone(), cx);
-        language_models::init(user_store.clone(), client.clone(), cx);
+        language_models::init(user_store, client.clone(), cx);
 
         watch_settings(fs.clone(), cx);
     });