- Update node to ^24
- Update pnpm corepack version to 10.33.0
- Update @types/node dependency to 24 and update lockfile
- Update GitHub Actions to actions/checkout@v6, actions/setup-node@v6,
  and pnpm/action-setup v5.0.0
- Remove now obsolete npm update step from publish workflow

- Bump @mui/material and @mui/icons-material from ^7.0.0 to ^9.0.0
- Bump @mui/x-date-pickers from ^8.0.0 to ^9.0.0
- Migrate deprecated TextField props to slotProps API:
  InputLabelProps → slotProps.inputLabel,
  inputProps → slotProps.htmlInput
- Migrate Autocomplete renderInput to use v9 params.slotProps
  structure instead of removed params.InputProps/inputProps
- Migrate date/time/datetime picker slotProps.textField to use
  nested slotProps for PickersTextField (v9 accessible field DOM)
- Remove createOnBlurHandler usage from date/time/datetime controls
  because v9 accessible field structure no longer provides input
  values via blur events; rely on onChange/onAccept instead
- Move Grid system props (justifyContent, alignItems) to sx,
  removed as direct props in MUI v9
- Move Grid direction='column' to sx={{ flexDirection: 'column' }},
  'column' removed from Grid direction in v9
- Move Stack width prop to sx, removed as direct prop in v9
- Rename ErrorOutline icon to ErrorOutlined, legacy "Outline"
  variants removed in @mui/icons-material v9
- Remove legacy @material-ui external pattern from rollup config
- Deprecate createOnBlurHandler in datejs.tsx (kept for public API)
- Update date/time/datetime tests to use picker component props
  instead of hidden input DOM manipulation

- Replace @mui/icons-material barrel imports with direct path imports
  to avoid bundling all 10,751 icon modules in the examples app build
- Add @mui/icons-material subpath regex to rollup externals so the
  library build correctly externalizes the new import paths
- Add @mui/x-date-pickers subpath regex to rollup externals to fix
  unresolved dependency warning for AdapterDayjs