UInput: nullable and optional modelModifiers turn any falsy value to null/undefined #5950

function updateInput(value: string | null | undefined) {
  if (props.modelModifiers?.trim) {
    value = value?.trim() ?? null
  }

  if (props.modelModifiers?.number || props.type === 'number') {
    value = looseToNumber(value)
  }

  if (props.modelModifiers?.nullable) {
    value ||= null // 👈
  }

  if (props.modelModifiers?.optional) {
    value ||= undefined // 👈
  }

  modelValue.value = value as T
  emitFormInput()
}