[Bugfix] Deal with fake entities in ItemClaimFilter
[Bugfix] Deal with fake entities in ItemClaimFilter

Bug: T175151
Change-Id: Ib1b949a2c884b8e76be5c9607066917feddbece5

wikimedia/pywikibot-core,magul/pywikibot-core,wikimedia/pywikibot-core,magul/pywikibot-core,PersianWikipedia/pywikibot-core