replace dangeroulsySetInnerHtml in NonMarkdownInstructions with UnsafeRenderedMarkdown

[Hamms]

I thought we actually didn't use this component for rendering instructions anymore - just for rendering the title in things like anigif detail views - but it turns out we do still use it to display instructions in netsim, so I can't actually remove it entirely :(

[islemaster]

I wonder if anyone would complain if we switched to the markdown instructions in NetSim.

[Hamms]

I'd be in favor of that.

Specifically, what we do now is use the MarkdownInstructions component for any netsim levels that have Long Instructions, and this component for any levels that don't (including both levels that only have Short Instructions, and any theoretical levels that have neither).

We also (for what I assume are historical reasons) use the NonMarkdownInstructions component to render the level title for things like the AniGif detail view.

It would probably be pretty simple to use MarkdownInstructions for levels that have either set of instructions, and render the title element as a standalone for those views that need it.

[Hamms]

Something along the lines of #27752 should be what we want

[islemaster]

Cool. I'm fine with either approach, I assume we'd want curriculum input on the latter but maybe worth getting it.