Align scePlayGoDialogGetResult unfinished error code with the other common dialog modules across the tree (0x80B80005, COMMON_DIALOG_ERROR_NOT_FINISHED) instead of 0x80ED0005. Update GuestPlayGoDialog test and technical debt entry accordingly.
Validate that the dialog is in finished state before returning results in scePlayGoDialogGetResult, returning ERROR_INVALID_STATE when called while initialized, and cover this case in GuestPlayGoDialog.