fix：苹果一键登录页面，深浅色

lib/features/auth/utils/one_key_login_result.dart

@@ -0,0 +1,40 @@
+const _umengFallbackCodes = {
+  '600002',
+  '600004',
+  '600005',
+  '600007',
+  '600008',
+  '600009',
+  '600010',
+  '600011',
+  '600012',
+  '600013',
+  '600014',
+  '600015',
+  '600017',
+  '600021',
+  '600023',
+  '600025',
+  '600026',
+};
+
+String? extractUmengLoginCode(Object? result) {
+  if (result is! Map) return null;
+  final code = result['code'] ?? result['resultCode'];
+  final value = code?.toString();
+  return value == null || value.isEmpty ? null : value;
+}
+
+bool isUmengTokenSuccess(Object? result) =>
+    extractUmengLoginCode(result) == '600000';
+bool isUmengAuthPage(Object? result) =>
+    extractUmengLoginCode(result) == '600001';
+bool isUmengEnvironmentAvailable(Object? result) =>
+    extractUmengLoginCode(result) == '600024';
+bool isUmengCancel(Object? result) => extractUmengLoginCode(result) == '700000';
+bool isUmengManualSwitch(Object? result) =>
+    extractUmengLoginCode(result) == '700001';
+bool isUmengFallbackLoginCode(Object? result) {
+  final code = extractUmengLoginCode(result);
+  return code != null && _umengFallbackCodes.contains(code);
+}