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/windowproxy.rs

@@ -201,7 +201,7 @@ impl WindowProxy {
             SetProxyReservedSlot(
                 js_proxy.get(),
                 0,
-                &PrivateValue((&*window_proxy).as_void_ptr()),
+                &PrivateValue((*window_proxy).as_void_ptr()),
             );
 
             // Notify the JS engine about the new window proxy binding.