Do not log empty values in wide event

[mishankov]

Do not log empty steps and errors.

This:

{"level":"DEBUG","name":"http.request","timestamp":"2026-03-01T19:38:32.602385+03:00","duration":195040541,"steps":[],"errors":[],"request.remoteAddr":"127.0.0.1:60449","tokens.type":"bearer","request.method":"GET","request.status":301,"serviceName":"http server"}

Should become this

{"level":"DEBUG","name":"http.request","timestamp":"2026-03-01T19:38:32.602385+03:00","duration":195040541,"request.remoteAddr":"127.0.0.1:60449","tokens.type":"bearer","request.method":"GET","request.status":301,"serviceName":"http server"}