fix(rivetkit): bind methods through createWriteThroughProxy

Author: abcxff

rivetkit-typescript/packages/rivetkit/src/registry/native.ts

@@ -1139,6 +1139,9 @@ function createWriteThroughProxy<T>(
 		const proxy = new Proxy(target, {
 			get(innerTarget, property, receiver) {
 				const result = Reflect.get(innerTarget, property, receiver);
+				if (typeof result === "function") {
+					return result.bind(innerTarget);
+				}
 				return result && typeof result === "object"
 					? wrap(result as object)
 					: result;