Xaml files not supported (in Xamarin.Forms projects)

[matt-goldman]

Description

When adding a *.demosnippets.xaml file to a project, the toolbox only shows the default controls (e.g. Label, Entry etc.) and not the snippets. Switching back to a .cs file lists the snippets, and they can be inserted into the .cs file.

Steps to recreate

Add a *.demosnippets.xaml file to an existing (or newly created) project

Current behavior

Create or open a xaml file, the toolbox shows only default controls

Expected behavior

Display the snippets from the *.demosnippets.xaml file in the toolbox