France is not that tied. Most reprocessing is done at La Hague. Some tiny part is sent to Russia based on older contracts but it's absolutely irrelevant for french generation in general. Last year France imported from russia the equivalent of 5% of domestic consumption... If you think this is some life changing amount...
Up till recently Russia had a higher market share of enrichment market due to megatons to megawatts policy, but as we all know, russia got wild, so now all western companies are ramping up facilities, be it orano or urenco.
Consider this, out of 23Bn of energy imports last year from Russia, nuclear related imports were 0.8bn, the rest being from fossils. Out of this 0.8bn, a big chunk was for VVER reactors (Finland, Czechia, Slovenia, Hungary, Bulgaria) - all requiring a very special fuel element. Framatome and Westinghouse started manufacturing it and testing in several facilities, but it'll take time for full replacement.
Four years into the war we've almost completely cut out all other parts of the Russian economy. Except the nuclear indutry. We're just too dependent.