Fix -Wformat warnings in Source/WebKit/UIProcess/WebAuthentication/fido/CtapAuthenticator.cpp.
<rdar://problem/126000836>
Pull request: https://github.com/WebKit/WebKit/pull/26925
Committed 277149@main (e936e6991f61): <https://commits.webkit.org/277149@main> Reviewed commits have been landed. Closing PR #26925 and removing active labels.