FIX: so-suricata-testrule should disable pcap logging

[dougburks]

User reported in #14662.

[dougburks]

Tested and verified:

Info: detect: 1 rule files processed. 43360 rules successfully loaded, 0 rules failed, 0
Info: threshold-config: Threshold config parsed: 1 rule(s) found
Info: detect: 43363 signatures processed. 1206 are IP-only rules, 4347 are inspecting packet payload, 37772 inspect application layer, 0 are decoder event only
Info: pcap: Starting file run for /input.pcap
Notice: threads: Threads created -> W: 1 FM: 1 FR: 1   Engine started.
Info: checksum: No packets with invalid checksum, assuming checksum offloading is NOT used
Info: pcap: pcap file /input.pcap end of file reached (pcap err code 0)
Notice: suricata: Signal Received.  Stopping engine.
Info: suricata: time elapsed 0.114s
Notice: pcap: read 1 file, 72662 packets, 75844281 bytes
Info: counters: Alerts: 102
==== End Suricata Output ===

If any alerts hit, they will be displayed below:

{
  "timestamp": "2025-05-06T20:45:02.344239+0000",