Add test for required requests field (#53925)

Author: mohamedamir

digital-credentials/create.tentative.https.html

@@ -217,4 +217,11 @@
       await promise_rejects_js(t, TypeError, navigator.credentials.create(options));
     }
   }, "Mediation is required to create a DigitalCredential.");
+
+  promise_test(async (t) => {
+    await promise_rejects_js(
+      t,
+      TypeError,
+      navigator.credentials.create({digital: {}}));
+  }, "`requests` field is required in the options object.");
 </script>

digital-credentials/get.tentative.https.html

@@ -263,4 +263,11 @@
     );
   }
 }, "Throws TypeError when request data is not JSON stringifiable.");
+
+promise_test(async (t) => {
+    await promise_rejects_js(
+      t,
+      TypeError,
+      navigator.credentials.get({digital: {}}));
+  }, "`requests` field is required in the options object.");
 </script>