Add module param identifiers to solve's scope

crates/compiler/load/tests/helpers/mod.rs

@@ -51,6 +51,7 @@ pub fn infer_expr(
         exposed_by_module: &Default::default(),
         derived_module,
         function_kind: FunctionKind::LambdaSet,
+        params_pattern: None,
         #[cfg(debug_assertions)]
         checkmate: None,
     };