Allow Custom PublicKeyCredentialRequestOptionsRepository in WebAuthnConfigurer

[BenEfrati]

Expected Behavior

As a developer, I would like to provide my own implementations for PublicKeyCredentialRequestOptionsRepository.

Current Behavior

Currently, there is no option to change the credentialRequestOptionsFilter and webAuthnAuthnFilter requestOptionsRepository. While this provides a default implementation, it lacks the flexibility to easily inject a custom PublicKeyCredentialRequestOptionsRepository for specific application needs.

Context

I'm trying to integrate WebAuthn into a Spring Security application and require a custom PublicKeyCredentialRequestOptionsRepository. The current configuration forces me to either accept the defaults or do workarounds.
#16369

Workarounds:

• Manually retrieve the credentialRequestOptionsFilter and webAuthnAuthnFilter from the SecurityFilterChain to set the RequestOptionsRepository.

securityFilterChain.getFilters().stream()
                .filter(WebAuthnAuthenticationFilter.class::isInstance)
                .map(WebAuthnAuthenticationFilter.class::cast)
                .findFirst()
                .ifPresent(filter -> {
                    filter.setAuthenticationSuccessHandler(webAuthnAuthenticationSuccessHandler);
                    filter.setRequestOptionsRepository(databasePublicKeyCredentialRequestOptionsRepository);
                });
securityFilterChain.getFilters().stream()
                .filter(PublicKeyCredentialRequestOptionsFilter.class::isInstance)
                .map(PublicKeyCredentialRequestOptionsFilter.class::cast)
                .findFirst()
                .ifPresent(filter -> {
                    filter.setRequestOptionsRepository(databasePublicKeyCredentialRequestOptionsRepository);
                });