Please improve types of ariaLabels prop

[mkeyy0]

Describe the bug
According to the documentation and implementation, some aria labels can be omitted. The default will be used if no aria label is provided for specific cases. But in the current implementation, the date-picker component doesn't allow to pass individual aria-labels based on the type definitions

To Reproduce
Pass any optional aria label. For example, amPmButton and see the error

Expected behavior
Allow to omit some of aria label definitions on the type level

Screenshots

Package versions:
TypeScript version: 5.6
Vue version: 3.4