SIM card with EF_SPN and display condition b2=0 b1=0，registered home network,...

SIM card with EF_SPN and display condition b2=0 b1=0，registered home network, the carrier name display was wrong

By looking at the 3GPP protocol, EF_EHPLMN does not mandate that it must contain
the hplmn of the IMSI; therefore, the getHomePlmns method needs to be modified.
If EF_EHPLMN exists, and hplmn is not included, the hplmn should be appended.

Test: manual

Bug:139902828