enabledFirstFactorAttributes
A list of enabled first factor attributes, sorted by priority.
These attributes represent the primary identification methods available for users during sign-in or sign-up. Examples include email address, phone number, or username. The order in this list reflects the preferred order for presenting these options in the UI.
Return
A list of strings, each representing an enabled first factor attribute. Returns an empty list if the SDK is not initialized or if no first factor attributes are enabled.