remove html tag in timeout error message

[graceguo-supercat]

@michellethomas @timifasubaa @mistercrunch

[timifasubaa]

Would it be better to allow the error message be rendered as html as opposed to string so the title can be bold?

[mistercrunch]

LGTM

@timifasubaa we removed all the DangerouslySetInnerHtml calls resently as they represent a vector of script injection. The alternative is to consider the error message as a React nodeas it gets passed around, though it may flow through Redux in which case it may be an anti-pattern to put nodes in the Redux store.

The easy & secure solution is to remove the tags.