[Desktop][CW][Follow up to #11483]Gemini entry in new tab page settings is not removed for unsupported region

[srirambv]

Description

[Follow up to #11483]Gemini entry in newtab page settings is not removed for unsupported region

Steps to Reproduce

1. Clean install 1.13.86 for French region
2. Open a new tab no Gemini widget is found
3. Open Settings -> New Tab page -> Gemini switch is still available

Actual result:

Linux

French	German

Windows

French	German

Expected result:

Gemini option should not be in NTP settings when widget isn't available

Reproduces how often:

Easy

Brave version (brave://version info)

Brave	1.13.86 Chromium: 85.0.4183.102 (Official Build) (64-Bit)
Revision	ffe848af6a5df4fa127e2929331116b7f9f1cb30-refs/branch-heads/4183@{#1770}
OS	Linux

Brave	1.13.86 Chromium: 85.0.4183.102 (Official Build) (64-Bit)
Revision	ffe848af6a5df4fa127e2929331116b7f9f1cb30-refs/branch-heads/4183@{#1770}
OS	Windows 10 OS Version 1809 (Build 17763.1397)

Version/Channel Information:

• Can you reproduce this issue with the current release? No
• Can you reproduce this issue with the beta channel? No
• Can you reproduce this issue with the nightly channel? No. Was verified to not have it Removes France and Germany from Gemini supported regions brave-core#6538 (comment)

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:

[GeetaSarvadnya]

Reproduced in windows for unsupported region India. Although the Gemini widget is not shown in NTP but in new tab settings the option is still available/enabled

[srirambv]

@rebron this is an issue only on 13.x branch. Its not an issue on 1.14.x branch. Are we ok to close this out or should it be fixed for 13.x branch as well?

[ryanml]

Keeping out of 1.13.x cc: @rebron @srirambv