"Rename account" should use outlined text field

[ArnyminerZ]

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Purpose

To keep consistency along other dialogs, the RenameAccountDialog should also be using OutlinedTextField.

Short description

Switched TextField usage in RenameAccountDialog to OutlinedTextField.

Checklist

• [x] The PR has a proper title, description and label.
• [x] I have self-reviewed the PR.
• [x] I have added documentation to complex functions and functions that can be used by other modules.
• [x] I have added reasonable tests or consciously decided to not add tests.

[ArnyminerZ]