crypto: graduate WebCryptoAPI Ed25519 and X25519 algorithms as stable

PR-URL: #56142
Reviewed-By: Yagiz Nizipli <[email protected]>
Reviewed-By: James M Snell <[email protected]>
Reviewed-By: Luigi Pinca <[email protected]>
Reviewed-By: Tobias Nießen <[email protected]>

Author: panva