webui: UI and routing fixes (#19586)
* chore: update webui build output
* chore: update webui build output
* fix: Scroll issues in DropdownMenuSearchable
* webui: fix redirect to root ignoring base path
* fix: Word wrapping
* fix: remove obsolete modality UI tests causing CI failures
- Remove VisionModality/AudioModality test stories
- Remove mockServerProps usage and imports
- Simplify Default test (remove dropdown interaction checks)
- Simplify FileAttachments test (remove mocks)
* feat: Improve formatting performance time
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Co-authored-by: Pascal <admin@serveurperso.com>
