improve error handling for excludeCredentials on iOS 26 and Android 16+#237

acn-masatadakurihara wants to merge 3 commits intocorbado:maincorbado/flutter-passkeys:mainfrom

acn-masatadakurihara:fix/exclude-credentials-error-mappingacn-masatadakurihara/flutter-passkeys:fix/exclude-credentials-error-mappingCopy head branch name to clipboard