feat(flutter): 修复登录输入并升级登录页

test/auth/auth_k21_test.dart

@@ -53,7 +53,7 @@ void main() {
     final errorBorder = email.decoration!.errorBorder! as OutlineInputBorder;
     final scheme = Theme.of(tester.element(emailFinder)).colorScheme;
     expect(errorBorder.borderSide.color, scheme.error);
-    expect(errorBorder.borderSide.width, 1.5);
+    expect(errorBorder.borderSide.width, 1);
   });
 }