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/onboarding/src/basics_page.rs

@@ -126,7 +126,7 @@ fn render_theme_section(tab_index: &mut isize, cx: &mut App) -> impl IntoElement
                 .gap_1()
                 .child(
                     h_flex()
-                        .id(name.clone())
+                        .id(name)
                         .relative()
                         .w_full()
                         .border_2()
@@ -201,7 +201,7 @@ fn render_theme_section(tab_index: &mut isize, cx: &mut App) -> impl IntoElement
                 });
             } else {
                 let appearance = *SystemAppearance::global(cx);
-                settings.set_theme(theme.clone(), appearance);
+                settings.set_theme(theme, appearance);
             }
         });
     }