multi_buffer: Work around another panic bug in path_key (#42920)

Fixes ZED-346 for now until I find the time to dig into this bug
properly

Release Notes:

- Fixed a panic in the diagnostics pane
2c7bcfcb7bLukas Wirth committed on 11/17/2025, 10:38:48 PM· committed by GitHubparent6bea23e
2 files changedLine totals unavailable