[SDK-1710] Allow Lock to use connection display name field from client configuration file

[stevehobbsdev]

Changes

• a new property added to Lock configuration to allow the use of the
  display_name field that is returned from the client configuration file
• if display_name has not been configured or is not available, the previous
  logic of using the name or the domain is used

Usage:

var lock = new Auth0Lock('clientId', 'domain', {
  preferConnectionDisplayName: true
});

References

Raised through internal service desk ticket

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.

• This change adds unit test coverage
• This change adds integration test coverage
• This change has been tested on the latest version of the platform/language

Checklist

• I have read the Auth0 general contribution guidelines
• I have read the Auth0 Code of Conduct
• All existing and new tests complete without errors
• All code quality tools/guidelines have been run/followed
• All relevant assets have been compiled
• All active GitHub checks have passed