cmaf-ingest: fix generated segment is not sent at once

[nvkhoi112358]

If segment is generated, e.g. timesubsstpp,
its each box is sent one by one

{..., "level":"WARN","msg":"Content-Length mismatch","ingester":4,"length":24,"contentLength":1797}
{..., "level":"WARN","msg":"Content-Length mismatch","ingester":4,"length":8,"contentLength":1797}
{..., "level":"WARN","msg":"Content-Length mismatch","ingester":4,"length":16,"contentLength":1797}
{..., "level":"WARN","msg":"Content-Length mismatch","ingester":4,"length":8,"contentLength":1797}
{..., "level":"WARN","msg":"Content-Length mismatch","ingester":4,"length":16,"contentLength":1797}
{..., "level":"WARN","msg":"Content-Length mismatch","ingester":4,"length":20,"contentLength":1797}
{..., "level":"WARN","msg":"Content-Length mismatch","ingester":4,"length":36,"contentLength":1797}
{..., "level":"WARN","msg":"Content-Length mismatch","ingester":4,"length":8,"contentLength":1797}
{..., "level":"WARN","msg":"Content-Length mismatch","ingester":4,"length":1661,"contentLength":1797},

However, only the last is actually sent to receiver and that incomplete segment cause trouble.

{"level":"error","chName":"testpic_2s","trName":"timestpp-se",
 "error":"failed to decode chunk 0: decode box \"l ve\", size 1010792557 too big (max 1661)",
 "time":"2025-03-14T04:30:11Z","message":"Failed to parse MP4 chunk"}