fix: Error popup now showing up immediately after click (#1272)

From #1265, Looks like Error Popup doesn't handle properly in some
circumstances.

---------

Co-authored-by: iTrooz <hey@itrooz.fr>
Co-authored-by: WerWolv <werwolv98@gmail.com>

plugins/builtin/source/content/views/view_provider_settings.cpp

@@ -43,6 +43,7 @@ namespace hex::plugin::builtin {
                         ImGui::CloseCurrentPopup();
                     }
                     else {
+                        ImGui::CloseCurrentPopup();
                         auto errorMessage = provider->getErrorMessage();
                         if (errorMessage.empty()) {
                             PopupError::open("hex.builtin.view.provider_settings.load_error"_lang);