fix: handle newlines in address input

[ryanml]

Description

Described in: https://ava-labs.atlassian.net/browse/CP-8970

Changes

Simply trims input within the <ContactInput /> TextField. This brings it in parity with how the address input on core.app behaves.

Testing

1. Following the steps in the issue, attempt to prepend a newline to the input, then paste an address
2. Confirm the newline is trimmed and no Unknown or other errors occur
3. See the send form on core.app for comparison

Checklist for the author

Tick each of them when done or if not applicable.

• I've covered new/modified business logic with Jest test cases.
• I've tested the changes myself before sending it to code review and QA.