Bug 40943: Fix t/Koha/Script.t

Failed with:
   Failed test 'Context userenv set correctly with no flags'
   at t/Koha/Script.t line 31.
     Structures begin differing at:
          $got->{session_id} = undef
     $expected->{session_id} = Does not exist

session_id is now part of userenv

Signed-off-by: Lucas Gass <lucas@bywatersolutions.com>

t/Koha/Script.t

@@ -45,6 +45,7 @@ is_deeply(
         'desk_name'     => undef,
         'register_id'   => undef,
         'register_name' => undef,
+        'session_id'    => undef,
     },
     "Context userenv set correctly with no flags"
 );