"shake on step" being loaded in causes segfaults on bad first param read when footstep sounds are present

[nosoop]

Initial troubleshooting checklist

• [x] The attribute is loaded, or this bug report is about a plugin load failure. (Check sm plugins list on the server.)
• [x] The attribute is the most recent revision.

Describe the bug Having "shake on step" loaded in seems to consistently cause server crashes under certain restrictions.

To Reproduce

1. Launch the server with the plugin loaded in and connect.
2. Immediately apply the add jingle to footsteps attribute on the player when spawning: sm_addwepatt @me "add jingle to footsteps" 1
3. Walk.
4. Server crashes.

Expected behavior Server doesn't crash.

Server environment (please complete the following information):

• Operating System: Linux, Debian 11
• SourceMod version: 1.11.0.6923