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/channel/src/channel_store_tests.rs

@@ -438,7 +438,7 @@ fn init_test(cx: &mut App) -> Entity<ChannelStore> {
 
     let clock = Arc::new(FakeSystemClock::new());
     let http = FakeHttpClient::with_404_response();
-    let client = Client::new(clock, http.clone(), cx);
+    let client = Client::new(clock, http, cx);
     let user_store = cx.new(|cx| UserStore::new(client.clone(), cx));
 
     client::init(&client, cx);