[EDHRec] Update tab title when a card is searched (#7408)

TabEdhRecMain never emitted tabTextChanged, so TabSupervisor::updateTabText
was never called and the tab kept the title it was created with.

addEdhrecMainTab() creates the tab without a card, so every search left the
title reading "EDHRec: " with no card name for the rest of the tab's life.

addEdhrecTab() sets the card before myAddTab(), which is why the older
TabEdhRec tab was never affected.

Co-authored-by: Lukas Brübach <Bruebach.Lukas@bdosecurity.de>

cockatrice/src/interface/widgets/tabs/api/edhrec/tab_edhrec_main.cpp

@@ -134,6 +134,8 @@ void TabEdhRecMain::setCard(CardInfoPtr _cardToQuery, bool isCommander)
         return;
     }
 
+    emit tabTextChanged(this, getTabText());
+
     QString cardName = cardToQuery->getName();
     QString formattedName = cardName.toLower().replace(" ", "-").remove(QRegularExpression("[^a-z0-9\\-]"));