A second sceSaveDataInitialize3 returned SAVE_DATA_ERROR_ALREADY_INITIALIZED.
PPSA12544's executable and its Unity SaveData plugin both initialize, and
the plugin raises Unity.SaveData.PS5.Core.SaveDataException on any error,
so the console must accept the second call. Initializations are now
counted; sceSaveDataTerminate ends the session at the last one and only
then checks for mounted slots.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>