Switching to legacy {Binding} vs. x:Bind in ContentDialog.xaml so our ContendDialog Items are rendered properly.  Fixes #2320. (#2321)
Switching to legacy {Binding} vs. x:Bind in ContentDialog.xaml so our ContendDialog Items are rendered properly.  Fixes #2320. (#2321)


bbowman/WinObjC,pradipd/WinObjC,pradipd/WinObjC,nathpete-msft/WinObjC,ehren/WinObjC,pradipd/WinObjC,pradipd/WinObjC,ehren/WinObjC,ehren/WinObjC,bbowman/WinObjC,nathpete-msft/WinObjC,bbowman/WinObjC,pradipd/WinObjC,ehren/WinObjC,bbowman/WinObjC,ehren/WinObjC,bbowman/WinObjC,nathpete-msft/WinObjC,nathpete-msft/WinObjC,nathpete-msft/WinObjC