Treat cookies as “SameSite=Lax” by default if no “SameSite” attribute is specified. Developers must opt-in to the current status quo of unrestricted use by explicitly asserting “SameSite=None”.
若未指定 Cookie 的“SameSite”属性，则将其默认视为“SameSite=Lax”。开发者须明确声明“SameSite=None”，以适应当前滥用的现状。