feat: added country disabling feature

[awais-ansari]

INF-1567

Description

• Countries in the disabledCountries list will no longer be visible to users in the account settings of other countries, and users will not be able to switch to disabled countries.
• User with a disabled country selected can change their country to another one. After switching, they cannot select the disabled country again.
• Implemented frontend validation to verify the country against the disabled countries list to prevent invalid country submissions.

For Example, if Russia is on the disabled countries list.

Other Country Users will not see Russia in the country list as an

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Russian user will see Russia in the country list but it'll be disabled and they can change their country to another one.

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Note

• The disabledCountries list will be fetched from an API in phase 2 implementation.

[codecov[bot]]

Codecov Report

Attention: Patch coverage is 76.47059% with 4 lines in your changes missing coverage. Please review.

Project coverage is 58.70%. Comparing base (752d760) to head (d6a23e1). Report is 1 commits behind head on 2u-main.

Files with missing lines	Patch %	Lines
src/account-settings/AccountSettingsPage.jsx	73.33%	4 Missing :warning:

Additional details and impacted files

```diff @@ Coverage Diff @@ ## 2u-main #1116 +/- ## =========================================== + Coverage 58.61% 58.70% +0.09% =========================================== Files 117 117 Lines 2317 2332 +15 Branches 641 645 +4 =========================================== + Hits 1358 1369 +11 - Misses 898 902 +4 Partials 61 61 ```

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