refactor: Rename isUserPrimary to isPrimaryUser for User

lib/ui/pages/users/user.dart

@@ -3,11 +3,11 @@ part of 'users.dart';
 class _User extends StatelessWidget {
   const _User({
     required this.user,
-    required this.isUserPrimary,
+    required this.isPrimaryUser,
   });
 
   final User user;
-  final bool isUserPrimary;
+  final bool isPrimaryUser;
   @override
   Widget build(final BuildContext context) => InkWell(
         onTap: () {
@@ -32,7 +32,7 @@ class _User extends StatelessWidget {
                   user.login,
                   style: Theme.of(context).textTheme.titleMedium?.copyWith(
                         color: Theme.of(context).colorScheme.onBackground,
-                        decoration: isUserPrimary
+                        decoration: isPrimaryUser
                             ? TextDecoration.underline
                             : user.isFoundOnServer
                                 ? TextDecoration.none

lib/ui/pages/users/users.dart

@@ -107,7 +107,7 @@ class UsersPage extends StatelessWidget {
                     itemBuilder:
                         (final BuildContext context, final int index) => _User(
                       user: users[index],
-                      isUserPrimary: users[index].type == UserType.primary,
+                      isPrimaryUser: users[index].type == UserType.primary,
                     ),
                   ),
                 ),