Dropdown choices for Method to resolve Unstoppable Domains are not translated

[btlechowski]

Follow up to #14488

Steps to Reproduce

1. Run Brave in Polish (PL) locale
2. Open brave://settings/extensions

Actual result:

Dropdown choices for Method to resolve Unstoppable Domains are not translated
Dropdown choices for Method to resolve Ethereum Name Service (ENS) are not translated

Expected result:

Dropdown choices are translated

Reproduces how often:

Easily reproduced

Brave version (brave://version info)

Brave	1.22.66 Chromium: 89.0.4389.90 (Official Build) (64-bit)
Revision	62eb262cdaae9ef819aadd778193781455ec7a49-refs/branch-heads/4389@{#1534}
OS	Ubuntu 18.04 LTS

cc @brave/legacy_qa @yrliou @rebron @mkarolin

[GeetaSarvadnya]

@btlechowski dup of ##14862