There are two versions of Telegram messenger for Android: GP one and a standalone APK. The latter is able to updating itself and, iirc, more relaxed towards content blocking. As Telegram client is open source, I think it would be easy to port self-updating code into Total Commander and release a non-GP unrestricted version.

Update: it was done, here's the link: https://www.ghisler.ch/board/viewtopic.php?t=76644 Not sure about that self-update part though.