[sailfish-browser] Use ListItem for favorite delegate fo TabPage. Contributes to JB#8152
[sailfish-browser] Use ListItem for favorite delegate fo TabPage. Contributes to JB#8152

This fixes also favorite item's width.

alinelena/sailfish-browser,sailfishos/sailfish-browser,alinelena/sailfish-browser,sailfishos/sailfish-browser,alinelena/sailfish-browser,rojkov/sailfish-browser,rojkov/sailfish-browser,sailfishos/sailfish-browser,sailfishos/sailfish-browser,sailfishos/sailfish-browser,rojkov/sailfish-browser,alinelena/sailfish-browser