Using Google and Apple Pay for Checkout setup mode isn't possible. The point of "setup" mode is to collect payment details and perform a 3DS check on them so you can charge "off-session" later without having to get your user back "on-session" in case 3DS is required.
Apple and Google's wallets are considered exempt from 3DS since they already require a 2FA activation.
If you want to use a digital wallet to create a subscription but not charge till later, you should look into using trial periods.
与恶龙缠斗过久,自身亦成为恶龙;凝视深渊过久,深渊将回以凝视…