clippy: fix several lint warns (#32126)

As seems #31500 still remain opened here's the next partial fix.

Fixed list: `unused_mut`, `clippy::needless_borrow`,
`clippy::match_ref_pats`, `clippy::borrow_deref_ref`, `clippy::ptr_eq`,
`clippy::unnecessary_cast`, `clippy::derivable_impls`,
`clippy::collapsible_match`, `clippy::extra_unused_lifetimes`,
`clippy::map_clone`, `clippy::manual_filter`.


- [x] `./mach build -d` does not report any errors
- [x] `./mach test-tidy` does not report any errors
- [x] These changes are part of #31500.
- [x] These changes do not require tests because are only cosmetic.

components/script/dom/window.rs

@@ -1910,7 +1910,7 @@ impl Window {
 
             let mut images = self.pending_layout_images.borrow_mut();
             let nodes = images.entry(id).or_default();
-            if !nodes.iter().any(|n| &**n as *const _ == &*node as *const _) {
+            if !nodes.iter().any(|n| std::ptr::eq(&**n, &*node)) {
                 let (responder, responder_listener) =
                     ProfiledIpc::channel(self.global().time_profiler_chan().clone()).unwrap();
                 let image_cache_chan = self.image_cache_chan.clone();