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/gpui/src/platform/test/platform.rs

@@ -187,14 +187,14 @@ impl TestPlatform {
             .push_back(TestPrompt {
                 msg: msg.to_string(),
                 detail: detail.map(|s| s.to_string()),
-                answers: answers.clone(),
+                answers,
                 tx,
             });
         rx
     }
 
     pub(crate) fn set_active_window(&self, window: Option<TestWindow>) {
-        let executor = self.foreground_executor().clone();
+        let executor = self.foreground_executor();
         let previous_window = self.active_window.borrow_mut().take();
         self.active_window.borrow_mut().clone_from(&window);