Describe the bug
As described in the title.

To Reproduce
Consider the following piece of code:

let rut = "11111.111-1" // An incorrect way to describe the RUT "11.111.111-1"
console.log(rutlib.validateRut(rut))

When running it, it prints "true"

Expected behavior
It must print "false" because the first (from left to right) thousands separator is missing.

Desktop (please complete the following information):

• OS: Windows 10
• Browser: Firefox
• Version 131.0