Search the web privately text isn't translated in other locales

[GeetaSarvadnya]

Description

Found while testing #24138
Search the web privately text isn't translated in other locales

Steps to Reproduce

1. Set the OS locale to Germany/France/Hindi/Kannada
2. Install brave 1.42.80
3. Open PT/TOR/Guest window
4. Search the web privately text isn't translated in other locales

Actual result:

Search the web privately text isn't translated in other locales

Hindi

Expected result:

Search the web privately text should be translated to other locales

Reproduces how often:

100%

Brave version (brave://version info)

क्रोमियम	1.42.80 Chromium: 104.0.5112.57 (आधिकारिक बिल्ड) (64-बिट)
पुनरीक्षण	212fd173a0da1e0a024f328295bb56a2529190bb-refs/branch-heads/5112@{#1042}
OS	Windows 10 Version 21H2 (Build 19044.1826)

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? NA

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/qa-team @rebron @mkarolin

[btlechowski]

Duplicate of #24267