Article 12 is completely unmodified except for the scope of parties involved. Since the original (2014) regulation didn't ban Tor, I think it's a safe assumption that this one doesn't either.
The more detailed answer: the article actually reads as follows:
> It shall be prohibited to participate, knowingly and intentionally, [...]
"Knowingly and intentionally" is the operative phrase here. In order to show that this article poses a threat to Tor's legality, you'd need to show at either Tor's operators or Tor itself intentionally provides service to RT. This is a stronger standard than passive service, the kind Tor actually provides.
[1]: https://eur-lex.europa.eu/legal-content/EN/TXT/?uri=CELEX%3A...