## Summary
- Chrome 142 rejects `var()` references in SVG `width`/`height`
attributes, causing icons to fall back to `100%` size
- Replaced `themeCssVariables.icon.size.*` /
`themeCssVariables.icon.stroke.*` (raw `var()` strings) with resolved
`theme.icon.size.*` / `theme.icon.stroke.*` (numeric values from
`ThemeContext`) when passed as icon component props
- Affects 3 navigation menu item components: `NavigationMenuItemFolder`,
`NavigationMenuItemLinkDisplay`, `LinkIconWithLinkOverlay`
## Test plan
- [ ] Verify navigation drawer folder chevron icons render at correct
size
- [ ] Verify navigation drawer link arrow icons render at correct size
- [ ] Verify link overlay icons render at correct size
- [ ] Test in Chrome 142+ to confirm the fix
- [ ] Test in Firefox/Safari to confirm no regression
Charles Bochet
72dd3af155