Allows nameless users to Signout and update profile (#1181)

server/createContext.ts

@@ -69,7 +69,7 @@ async function getUserFromSession({
     return null;
   }
   const { email, username } = user;
-  if (!username || !email) {
+  if (!email) {
     return null;
   }
   const avatar = user.avatar || defaultAvatarSrc({ email });