**Apache Airflow version**: 2.1.1

**What happened**:

For user with "Op" role following menu items are not visible in navigation panel, however pages are accessible (roles has access to it):
- "Browse" -> "DAG Dependencies"
- "Admin" -> "Configurations"

**What you expected to happen**: available menu items in navigation panel
airflow/www/security.py
"""
        Add an existing permission pair to a role.
        :param role: The role about to get a new permission.
        :type role: Role
        :param permission: The permission pair to add to a role.
        :type permission: PermissionView
        :return: None
        :rtype: None
        """
        self.add_permission_role(role, permission)
    def remove_permission_from_role(self, role: Role, permission: PermissionView) -> None:
        """
        Remove a permission pair from a role.
        :param role: User role containing permissions.
        :type role: Role
        :param permission: Object representing resource-> action pair
        :type permission: PermissionView
        """
        self.del_permission_role(role, permission)
    def delete_action(self, name: str) -> bool:
        """
        Deletes a permission action.
        :param name: Name of action to delete (e.g. can_read).
        :type name: str
        :return: Whether or not delete was successful.
        :rtype: bool
        """
        return self.del_permission(name)
    def get_all_permissions(self) -> Set[Tuple[str, str]]: