UI: Fix Defaults button not triggering UI update

Update all UI at default values when clicks "Defaults" button in the
source Properties.

This fixes mantis issue 1242.

Closes obsproject/obs-studio#1592

UI/window-basic-properties.cpp

@@ -189,7 +189,7 @@ void OBSBasicProperties::on_buttonBox_clicked(QAbstractButton *button)
 		if (!view->DeferUpdate())
 			obs_source_update(source, nullptr);
 
-		view->RefreshProperties();
+		view->ReloadProperties();
 	}
 }