Pull request #5030: snort_ml: scan multipart form data

Pull request #5030: snort_ml: scan multipart form data

Merge in SNORT/snort3 from ~BRASTULT/snort3:snort_ml_multipart to master

Squashed commit of the following:

commit 324097ebac2877412a01f66816006c6033613ad3
Author: Brandon Stultz <brastult@cisco.com>
Date:   Tue Dec 2 18:18:21 2025 -0500

    snort_ml: enable client body scanning by default

commit 3a36905a39c842aca112757b3927b135395429ff
Author: Brandon Stultz <brastult@cisco.com>
Date:   Tue Dec 2 18:17:57 2025 -0500

    snort_ml: scan multipart form data

commit 065b77b473a6536bb002c71d362d8b7beb78e815
Author: Brandon Stultz <brastult@cisco.com>
Date:   Tue Dec 2 18:05:27 2025 -0500

    pub_sub: add is_urlencoded method

commit 6ef1aee143d6040d3e690f197cc71e629e9b40c9
Author: Brandon Stultz <brastult@cisco.com>
Date:   Tue Dec 2 17:57:54 2025 -0500

    http_inspect: add urlencoded to content-type list