Add invalidHint to phoneNumberInput (fix issue #1836)

[blankg]

Changes

Please describe both what is changing and why this is important. Include:

This PR should fix the issue described in issue #1836, by adding an invalidHint property the PhoneNumberInput component.
The invalidHint string is taken from phoneNumberInputInvalidHint which is optional (if not provided then this feature takes no effect) and can be provided in the languageDictionary.

for example:
new Auth0LockPasswordless(clientId, domain, { languageDictionary: { phoneNumberInputInvalidHint: "invalid phone number. only numbers are allowed" } });

Note: the phoneNumberInputInvalidHint can also be added to i18n files to make this behaviour default for the PhoneNumberInput.

References

#1836

Please note any links that are not publicly accessible.

Testing

Please describe how this can be tested by reviewers. Be specific about anything not tested and reasons why. If this library has unit and/or integration testing, tests should be added for new functionality and existing tests should complete without errors.

snapshots updated with invalidHint prop

[stevehobbsdev]

@blankg Thanks for raising this! Let me test and understand the issue and I'll come back to you this week.

I can see we definitely will need some text for the lang files here, at least for English to start.

[stevehobbsdev]

On reflection, we already have something in our backlog to make sure all the translations are present - let's do the lang file changes when we do that work. For now, the key can be specified manually.