llnglanguage cookie should set "Secure" flag
Opening the portal with any recent version of Chrome and SameSite=None shows this message:
Mark cross-site cookies as Secure to allow setting them in cross-site contexts Cookies marked with SameSite=None must also be marked with Secure to allow setting them in a cross-site context. This behavior protects user data from being sent over an insecure connection.
We need to extend #2605 (closed) and also set the Secure flag on llnglanguage