Follow up of #14750 - Incognito in upgrade message in Polish locale

[GeetaSarvadnya]

Description

Follow up of #14750 - Incognito in upgrade message in Polish locale

Steps to Reproduce

1. Follow the STR from Incognito in upgrade message in Polish locale #14750 (comment)

Actual result:

Okna incognito

Expected result:

Prywatne okna

Reproduces how often:

Easy

Brave version (brave://version info)

Brave	1.22.66 Chromium: 89.0.4389.90 (Build officiel) (64 bits)
Révision	62eb262cdaae9ef819aadd778193781455ec7a49-refs/branch-heads/4389@{#1534}
Système d'exploitation	Windows 10 OS Version 2004 (Build 19041.867)

Version/Channel Information:

• Can you reproduce this issue with the current release? NA
• Can you reproduce this issue with the beta channel? NA
• Can you reproduce this issue with the nightly channel? Yes

Other Additional Information:

• Does the issue resolve itself when disabling Brave Shields? NA
• Does the issue resolve itself when disabling Brave Rewards? NA
• Is the issue reproducible on the latest version of Chrome? NA

Miscellaneous Information:

cc: @brave/legacy_qa @rebron @mkarolin

[mkarolin]

@GeetaSarvadnya I can't reproduce with Nightly:

Could you, please, retry?

[btlechowski]

Verification passed on

Brave	1.37.86 Chromium: 99.0.4844.51 (Oficjalna wersja) beta (64-bitowa)
Wersja	d537ec02474b5afe23684e7963d538896c63ac77-refs/branch-heads/4844@{#875}
System operacyjny	Windows 7 Service Pack 1 (Build 7601.24544)

It looks like the whole string has been axed.