The IMF is just being lazy. Like how they are citing Iran with a $2tril GDP based on 'official' figures.
Those who really believe the Russian economy is growing need to have the heads check. Sanctions, frozen assets, falling energy prices, Ural's oil discount, losing their biggest customer, mobilization, ~500k-1mil mostly young Russians fleeing the country. If you believe they are still growing under these circumstances, you probably also believe that China only has 2 daily Covid deaths when they reopen their country because the given official figures say so.