Rules Based Number Formatting not available

[petrus-jvrensburg]

For several locales, number formatting is currently failing. I haven't tested all available locales, but I getting errors for at least [:ur, :bn, :te, :mr, :jv].

To reproduce:

Cldr.put_locale("ur")
DemoApp.Backend.Number.to_string(12345)

This returns

{:error, {Cldr.Rbnf.NotAvailable, "RBNF is not available for the locale :ur"}}