FR (Authenticator): Customize Authentication Flow

### On which framework/platform would you like to see this feature implemented?

React

### Which UI component is this feature-request for?

Authenticator

### Please describe your feature-request in detail.

I would like to be able to define the authentication flow for the Authenticator component.

My scenario is my users will be setup by an admin, no signup, and provided to users without verifying email addresses.
When the user signs in, they're asked to reset their temporary password and provide an email address.

Currently the flow logs them in and then on the next login asks them to verify their email. I would like for the email verification to be completed after the new password creation, and before logging the user in (with the option to skip).

### Please describe a solution you'd like.

_No response_

### We love contributors! Is this something you'd be interested in working on?

- [ ] 👋 I may be able to implement this feature request.
- [ ] ⚠️ This feature might incur a breaking change.

The issue targets the React Authenticator component; start at its authentication-flow entry point and trace the temporary-password reset and email-verification steps. Done means the flow can request an email after the password reset, verify it before login, and optionally skip verification, without deferring verification to a later login.

Written by the indexing model from the issue text.