Fix frontend test assertions - remove inaccessible form role checks

- Update login-form.test.tsx to remove screen.getByRole('form') assertions
- Tests now check for form elements directly by label text

node_modules/cssstyle/lib/utils/propertyDescriptors.js

@@ -0,0 +1,16 @@
+"use strict";
+
+const prepareValue = require("../parsers").prepareValue;
+
+module.exports.getPropertyDescriptor = function getPropertyDescriptor(property) {
+  return {
+    set(v) {
+      this._setProperty(property, prepareValue(v));
+    },
+    get() {
+      return this.getPropertyValue(property);
+    },
+    enumerable: true,
+    configurable: true
+  };
+};