fix lookup of family in config.usernames and config.sysopnames
fix lookup of family in config.usernames and config.sysopnames

using fam.name instead of the string representation for Family objects

bug: 68440
Change-Id: I5eb9d2b39768b047290ac8c14e0201114630daed

smalyshev/pywikibot-core,emijrp/pywikibot-core,magul/pywikibot-core,wikimedia/pywikibot-core,Darkdadaah/pywikibot-core,hasteur/g13bot_tools_new,happy5214/pywikibot-core,npdoty/pywikibot,valhallasw/pywikibot-core,hasteur/g13bot_tools_new,jayvdb/pywikibot-core,xZise/pywikibot-core,happy5214/pywikibot-core,icyflame/batman,magul/pywikibot-core,TridevGuha/pywikibot-core,hasteur/g13bot_tools_new,npdoty/pywikibot,wikimedia/pywikibot-core,Darkdadaah/pywikibot-core,trishnaguha/pywikibot-core,PersianWikipedia/pywikibot-core,h4ck3rm1k3/pywikibot-core,h4ck3rm1k3/pywikibot-core,VcamX/pywikibot-core,jayvdb/pywikibot-core,darthbhyrava/pywikibot-local