Controller bugfixes in profile select (#8716)

* Controller bugfixes in profile select, closes #8265

2 fixes for using a controller in profile select dialog.

Pressing 'B' cancels the launch of the game
Using controller to select a profile now correctly sets the index to use for the launch

* Added brackets to if statements as requested.

src/yuzu/applets/qt_profile_select.cpp

@@ -100,6 +100,7 @@ QtProfileSelectionDialog::QtProfileSelectionDialog(Core::HID::HIDCore& hid_core,
                 }
                 QKeyEvent* event = new QKeyEvent(QEvent::KeyPress, key, Qt::NoModifier);
                 QCoreApplication::postEvent(tree_view, event);
+                SelectUser(tree_view->currentIndex());
             });
 
     const auto& profiles = profile_manager->GetAllUsers();