Changes

ts_31_102: EF SUCI_Calc_Info: fix decoding empty files

When trying to use `edit_binary_decoded` with an empty file, pysim
runs into a len(None) exception, because hpkl.to_dict()['hnet_pubkey_list'] returns
None.

Can reproduced with a CCC Camp 2023 usim and editing the file.

Change-Id: Ib8e322e65dd768bfd49e7a5620a2163f12a74ec7