First run dialog is not translated

[btlechowski]

Follow up to #12679

Steps to Reproduce

1. Clean install
2. Run Brave in Polish locale

Actual result:

Some strings are not translated

Expected result:

All strings are translated

Reproduces how often:

Easily reproduced

Brave version (brave://version info)

Brave	1.21.52 Chromium: 88.0.4324.152 (Official Build) dev (64-bit)
Revision	6579930fc53b4dc589c042bec9d0a3778326974d-refs/branch-heads/4324@{#2106}
OS	Ubuntu 18.04 LTS

Brave	1.22.23 Chromium: 89.0.4389.48 (Official Build) nightly (64-bit)
Revision	0fe3c4589a6cf5ce719d167834dfa9cd8978937a-refs/branch-heads/4389@{#873}
OS	Ubuntu 18.04 LTS

cc @brave/legacy_qa @rebron @mkarolin

[karenkliu]

We need to use this text from #14183 for translations

[kjozwiak]

As per #14369 (comment), moving issue into https://github.com/brave/brave-browser/milestone/167 now that brave/brave-core#8093 was merged into 1.22.x and 1.21.x via brave/brave-core#8096 & brave/brave-core#8097.

@brave/legacy_qa if it's still an issue, please re-open and remove it from the milestone as there was no code associated with the issues so we can just re-open then and decide if it's release blocking or not.

[btlechowski]

Verification passed on

Brave	1.21.71 Chromium: 89.0.4389.72 (Official Build) (64-bit)
Revision	3f345f156bfd157bd1bea06310e55f3fb2490359-refs/branch-heads/4389@{#1393}
OS	Ubuntu 18.04 LTS

Polish PL locale

---

Verified passed with

Brave | 1.21.71 Chromium: 89.0.4389.72 (Official Build) (x86_64)
-- | --
Revision | 3f345f156bfd157bd1bea06310e55f3fb2490359-refs/branch-heads/4389@{#1393}
OS | macOS Version 10.15.7 (Build 19H512)

Verified STR from description for the below languages/locales:

German (Germany)	French (France)	Japanese (Japan)