js-sys: Catch exceptions thrown in Reflect APIs

Proxies passed to Reflect APIs can throw for any of these operations and it is a
bit of a mess.

crates/js-sys/tests/wasm/Reflect.js

@@ -23,3 +23,19 @@ exports.Rectangle2 = class {
     return x === y;
   }
 };
+
+exports.throw_all_the_time = () => new Proxy({}, {
+  getPrototypeOf() { throw new Error("nope"); },
+  setPrototypeOf() { throw new Error("nope"); },
+  isExtensible() { throw new Error("nope"); },
+  preventExtensions() { throw new Error("nope"); },
+  getOwnPropertyDescriptor() { throw new Error("nope"); },
+  defineProperty() { throw new Error("nope"); },
+  has() { throw new Error("nope"); },
+  get() { throw new Error("nope"); },
+  set() { throw new Error("nope"); },
+  deleteProperty() { throw new Error("nope"); },
+  ownKeys() { throw new Error("nope"); },
+  apply() { throw new Error("nope"); },
+  construct() { throw new Error("nope"); },
+});