test: use assert.rejects

This verifies that the test actually rejects at this point by using
`assert.rejects` instead of `try / catch`.

PR-URL: https://github.com/nodejs/node/pull/27123
Reviewed-By: Anna Henningsen <anna@addaleax.net>
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>
Reviewed-By: Yuta Hiroto <hello@hiroppy.me>
Reviewed-By: James M Snell <jasnell@gmail.com>

test/parallel/test-stream-readable-async-iterators.js

@@ -353,11 +353,13 @@ async function tests() {
       assert.strictEqual(e, err);
     }));
     readable.destroy(err);
-    try {
-      await readable[Symbol.asyncIterator]().next();
-    } catch (e) {
-      assert.strictEqual(e, err);
-    }
+    await assert.rejects(
+      readable[Symbol.asyncIterator]().next(),
+      (e) => {
+        assert.strictEqual(e, err);
+        return true;
+      }
+    );
   }
 
   {