fix: Clear serverInstallationWizardData after the wizard is finished

lib/logic/cubit/server_installation/server_installation_repository.dart

@@ -538,5 +538,6 @@ class ServerInstallationRepository {
     await getIt<ResourcesModel>().addBackupsCredential(
       wizardData.backupsCredential!,
     );
+    await getIt<WizardDataModel>().clearServerInstallation();
   }
 }

lib/logic/get_it/resources_model.dart

@@ -297,6 +297,11 @@ class WizardDataModel {
     await _box.put(BNames.serverInstallationWizardData, _serverInstallation);
   }
 
+  Future<void> clearServerInstallation() async {
+    _serverInstallation = null;
+    await _box.delete(BNames.serverInstallationWizardData);
+  }
+
   Future<void> clear() async {
     await _box.clear();
     await _box.compact();