Nuxt 4.2 breaks @vueform/slider due to wNumb CommonJS import incompatibility

Key Points:
  - Critical breaking change between Nuxt 4.1.3 and 4.2.0
  - wNumb library doesn't provide ES module default export
  - @vueform/slider uses incompatible import syntax
  - Workaround: downgrade to Nuxt 4.1.3
  - Needs fix in @vueform/slider import pattern