api: Fix return default images but not on cards that do not exist in non-idolized
api: Fix return default images but not on cards that do not exist in non-idolized

rdsathene/SchoolIdolAPI,laurenor/SchoolIdolAPI,SchoolIdolTomodachi/SchoolIdolAPI,dburr/SchoolIdolAPI,SchoolIdolTomodachi/SchoolIdolAPI,rdsathene/SchoolIdolAPI,SchoolIdolTomodachi/SchoolIdolAPI,dburr/SchoolIdolAPI,dburr/SchoolIdolAPI,rdsathene/SchoolIdolAPI,laurenor/SchoolIdolAPI,laurenor/SchoolIdolAPI