DatePicker: support custom separator character

[pedroarelo]

🐛 Bug report

When inputing the "-" (dash) character on a date input to separate from days to months. That character is invalid.
Although you can use the " " (space) or "/" (slash) to separate days from months from years. Would be good to include that same separator

💥 Steps to reproduce

just try to input 10-10-2024

💻 Link to reproduction

https://stackblitz.com/run?file=src%2FApp.tsx,src%2FDatePicker.tsx&showSidebar=0

🧐 Expected behavior

Should allow the dash character to be input also.

🌍 System information

Software	Version(s)
Zag Version	1.12.0
Browser	Chrome
Operating System	MacOS