I want to use the Unicode Character PLAYING CARD ACE OF SPADES in a ConTeXt
document.  Because of the way the source document is created it has to be
as the actual unicode character itself, rather than a reference to a
specific character in a specific font.

Here's what I've tried, but it doesn't work:

\definefontfallback[mainface][rm][Symbola][preset=range:playingcards,force=yes]
\definefontfamily[mainface][rm][LibertinusSerif]
\enabletrackers[fonts.missing]
\setupbodyfont[mainface]
\starttext
🂡 Testing!
\stoptext

The PLAYING CARD ACE OF SPADES character does not show up in the output
PDF.

Can anyone tell me how to do this?

Thanks!
-- 
T. Kurt Bond, tkurtbond@gmail.com, https://tkurtbond.github.io