fix(provider): add sub to defaultJwtPayload for credentials provider. (…

…#1725)

Co-authored-by: Joseph Chen <jchen@dogomedia.com>

src/server/routes/callback.js

@@ -262,7 +262,8 @@ export default async function callback (req, res) {
     const defaultJwtPayload = {
       name: user.name,
       email: user.email,
-      picture: user.image
+      picture: user.image,
+      sub: user.id?.toString()
     }
     const jwtPayload = await callbacks.jwt(defaultJwtPayload, user, account, userObjectReturnedFromAuthorizeHandler, false)