Package should not throw errors when thousandSeparator and decimalSeparator are similar

[ralucaStan]

Describe the issue and the actual behavior

When thousandSeparator and decimalSeparator are similar, the plugin throws an Error.

Describe the expected behavior

Although those separators should not be identical I don't think react-number-format should throw an error.
IMO it should show an warning informing the developers and it should still render some output; Informing developers allows them to see and fix the issue upstream. Renderign a value would enable consumers of the plugin to not provide a broken experience.
Throwing an error is impacting flows on real websites. Imagine a checkout flow interrupted by a formatting plugin.

Provide a CodeSandbox link illustrating the issue

Not needed

<NumberFormat
  thousandSeparator="."
  decimalSeparator="."
  ... 
  />

Nice to have

Communicate this limitation in the docs