server: fix misleading data length validation log message
The format string "%u < %u <= %u" was printed with arguments (min_len, data->len, max_len), placing the offending length in the middle and mislabeling it. This is confusing. Let's print the actual length followed by the expected interval instead.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com> Change-Id: Ice95c1f8ad1aa8de259364bd70eba0db8918b19e
