Fixes a crash that could occur during file search when the icon theme lacks too many icons (e.g hicolor).

What's Changed

• fix: open window on confirm alert if hidden by @aurelleb in https://github.com/vicinaehq/vicinae/pull/1019
• fix: stackoverflow on image fallback chain by @aurelleb in https://github.com/vicinaehq/vicinae/pull/1028

Full Changelog: https://github.com/vicinaehq/vicinae/compare/v0.19.2...v0.19.3