Disable unused-import warnings on __with_name* aliases.

These don't always get used, so disable unused-import warnings for them.

Author: sunfishcode

crates/rust/src/lib.rs

@@ -398,6 +398,7 @@ impl RustWasm {
             TypeGeneration::Remap(remapped_path) => {
                 let name = format!("__with_name{}", self.with_name_counter);
                 self.with_name_counter += 1;
+                uwriteln!(self.src, "#[allow(unused_imports)]");
                 uwriteln!(self.src, "use {remapped_path} as {name};");
                 InterfaceName {
                     remapped: true,