Revert "fix: allow accessing the JSON-LD context with JWT (#1225)"

This reverts commit 3ecc30f.

Author: alanpoulain

core/jwt.md

@@ -90,7 +90,6 @@ security:
 
     access_control:
         - { path: ^/docs, roles: IS_AUTHENTICATED_ANONYMOUSLY } # Allows accessing the Swagger UI
-        - { path: ^/contexts, roles: IS_AUTHENTICATED_ANONYMOUSLY } # Allows accessing the JSON-LD context
         - { path: ^/authentication_token, roles: IS_AUTHENTICATED_ANONYMOUSLY }
         - { path: ^/, roles: IS_AUTHENTICATED_FULLY }
 ```