Override firejail.config to enable an option?

Hello! I’m trying to figure out if it’s possible to override the firejail.config line from:

# browser-disable-u2f yes

to:

browser-disable-u2f no

It looks like the module doesn’t expose any extended options: nixpkgs/firejail.nix at 4dab52dbc93fd0d1b23fa0908de04fc3eb49a34c · NixOS/nixpkgs · GitHub. Any thoughts on how to do this? I guess the general question is how to override config files. Thank you!