[MC-264684] Too long macro silently fails

Make function oom:

$function oom {A:$(A)$(A)}

and run function oom {A:A}

Expect: at least some log
Actual: nothing. No response, and other chat go on after some lag

Linked issues

That's just because of recursion and reaching the max chain command limit.
You don't need macros to reach that limit.

Lack of response is still problematic though.

Nope maxchain is 65536, which mean string of length 2^>10000 will get generated