MuonByteStream: Remove usage of "extern" ByteStream_StorageType
This is a follow-up MR to !21339 (merged) in order to remove the usage of the extern
symbol ByteStream_StorageType
from all Muon bytestream converters.
This is a follow-up MR to !21339 (merged) in order to remove the usage of the extern
symbol ByteStream_StorageType
from all Muon bytestream converters.