[XamMac] Fix RichTextView links with disabled Selectable mode
[XamMac] Fix RichTextView links with disabled Selectable mode

mono/xwt,lytico/xwt,antmicro/xwt,akrisiun/xwt,residuum/xwt,hamekoz/xwt,hwthomas/xwt,cra0zy/xwt,TheBrainTech/xwt