For heirs of deceased lawyers, or for attorneys who retire or become judges, dealing with unidentified funds held in client trust accounts can be a problem. But the Illinois Supreme Court wants to make it a little easier under a rule change announced this week. Beginning July 1, unidentified funds from Interest on Lawyers Trust Accounts — accounts used to handle multiple clients’ funds — should be given to the Lawyers Trust Fund of Illinois if they’re unclaimed after 12 months and a …