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/agent_ui/src/slash_command.rs

@@ -88,8 +88,6 @@ impl SlashCommandCompletionProvider {
                                 .map(|(editor, workspace)| {
                                     let command_name = mat.string.clone();
                                     let command_range = command_range.clone();
-                                    let editor = editor.clone();
-                                    let workspace = workspace.clone();
                                     Arc::new(
                                             move |intent: CompletionIntent,
                                             window: &mut Window,
@@ -158,7 +156,7 @@ impl SlashCommandCompletionProvider {
         if let Some(command) = self.slash_commands.command(command_name, cx) {
             let completions = command.complete_argument(
                 arguments,
-                new_cancel_flag.clone(),
+                new_cancel_flag,
                 self.workspace.clone(),
                 window,
                 cx,