FR: 2FA Input whitespace is trimmed before submit

### 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.

# Feature Request: Trim Whitespace in 2FA Code Input Field

## Framework/Platform
**React**

## UI Component
**Authenticator**

## Feature Description
Currently, the input field for the 2FA (Two-Factor Authentication) code does not trim whitespace before submitting the code. This can lead to user frustration if they accidentally include leading or trailing spaces, causing their 2FA code to be rejected even though it is correct.

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

### Desired Behavior
The input field for the 2FA code should automatically trim any leading or trailing whitespace before submitting the code.

### 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.

Start at the React Authenticator component and trace how the 2FA input value is handled immediately before submission. Confirm the expected behavior for leading and trailing whitespace, then verify that a code with surrounding spaces is submitted as the trimmed value without changing other input behavior.

Written by the indexing model from the issue text.