Update country-config to use `confirmRegistration` and `rejectRegistration`

[naftis]

Depends on #7848

Motivation

Country-config can now use the graphql-endpoints to confirm or reject the registration. This allows 3rd party integrations to use those endpoints as well, if they are removed from country-config.

Dev work

opencrvs/opencrvs-countryconfig#288

[naftis]

@onnee04 this is verified via end-to-end tests