Why would France, which has specifically built its civilian nuclear fleet for independence from the US, want to rely on the American company Westinghouse?
France already did so. Their current reactor architecture (pressurized-water) was Westinghouse's (France bought a license in the 1970's). They even coined a partnership, see https://pubs.acs.org/doi/10.1021/cen-v054n002.p005
Westinghouse is bankrupt many times over, if I was a shareholder I would be busted.
EPR was designed by followers of Amory Lovins that wanted to make a reactor which is unconstructable at any cost and schedule.
They tried building an EPR in Finland and it is a decade behind schedule and nobody cares because the people working on it have the best paying job they ever had.
They did get an EPR running in China but had fuel damage right away.
AP1000 is running in China for real and will be running at Vogtle in Georgia USA next year. There have been so many ownership changes that I would have said AP1000 was a Japanese design 10 years ago, now it is effectively a Chinese design.
