[MarkdownTextBlock] SVG Image doesn't render

[michael-hawker]

Describe the bug

Noticed in our MarkdownTextBlock sample that we have SVG images referenced in the sample text. However, they don't render. This seems odd...

• Is this bug a regression in the toolkit? If so, what toolkit version did you last see it work: Not sure, must have worked sometime as it's in the sample text...

Steps to Reproduce

Steps to reproduce the behavior:

1. Go to MarkdownTextBlock sample
2. Scroll down to Images section with SVG logo
3. See error

Expected behavior

Image loads

Screenshots

It does look like something is trying to be displayed, but nothing appears?

Environment

Tried both in 6.1 sample app in the store and from PR #3437