[WebAuthn] Do not end ceremony if plugged in U2F cannot fulfill the r…

…equest.

https://bugs.webkit.org/show_bug.cgi?id=259662
rdar://112477660

Reviewed by Brent Fulgham.

These responses cause ceremonies to error out whenever an unsupported for the
operation U2F key is plugged in. We shouldn't end the ceremony just because
the plugged in U2F key is plugged in because the user could still plug in a different
key or use the platform authenticator.

* Source/WebKit/UIProcess/WebAuthentication/fido/U2fAuthenticator.cpp:
(WebKit::U2fAuthenticator::makeCredential):
(WebKit::U2fAuthenticator::getAssertion):

Canonical link: https://commits.webkit.org/266658@main

Source/WebKit/UIProcess/WebAuthentication/fido/U2fAuthenticator.cpp

@@ -54,10 +54,8 @@ U2fAuthenticator::U2fAuthenticator(std::unique_ptr<CtapDriver>&& driver)
 void U2fAuthenticator::makeCredential()
 {
     auto& creationOptions = std::get<PublicKeyCredentialCreationOptions>(requestData().options);
-    if (!isConvertibleToU2fRegisterCommand(creationOptions)) {
-        receiveRespond(ExceptionData { NotSupportedError, "Cannot convert the request to U2F command."_s });
+    if (!isConvertibleToU2fRegisterCommand(creationOptions))
         return;
-    }
     if (!creationOptions.excludeCredentials.isEmpty()) {
         ASSERT(!m_nextListIndex);
         checkExcludeList(m_nextListIndex++);
@@ -87,10 +85,8 @@ void U2fAuthenticator::issueRegisterCommand()
 
 void U2fAuthenticator::getAssertion()
 {
-    if (!isConvertibleToU2fSignCommand(std::get<PublicKeyCredentialRequestOptions>(requestData().options))) {
-        receiveRespond(ExceptionData { NotSupportedError, "Cannot convert the request to U2F command."_s });
+    if (!isConvertibleToU2fSignCommand(std::get<PublicKeyCredentialRequestOptions>(requestData().options)))
         return;
-    }
     ASSERT(!m_nextListIndex);
     issueSignCommand(m_nextListIndex++);
 }