Update hamburge menu for VPN

[deeppandya]

Resolves brave/brave-browser#41591
Resolves brave/brave-browser#41592

Submitter Checklist:

• I confirm that no security/privacy review is needed and no other type of reviews are needed, or that I have requested them
• There is a ticket for my issue
• Used Github auto-closing keywords in the PR description above
• Wrote a good PR/commit description
• Squashed any review feedback or "fixup" commits before merge, so that history is a record of what happened in the repo, not your PR
• Added appropriate labels (QA/Yes or QA/No; release-notes/include or release-notes/exclude; OS/...) to the associated issue
• Checked the PR locally:
  • npm run test -- brave_browser_tests, npm run test -- brave_unit_tests wiki
  • npm run presubmit wiki, npm run gn_check, npm run tslint
• Ran git rebase master (if needed)

Reviewer Checklist:

• A security review is not needed, or a link to one is included in the PR description
• New files have MPL-2.0 license header
• Adequate test coverage exists to prevent regressions
• Major classes, functions and non-trivial code blocks are well-commented
• Changes in component dependencies are properly reflected in gn
• Code follows the style guide
• Test plan is specified in PR before merging

After-merge Checklist:

• The associated issue milestone is set to the smallest version that the
  changes has landed on
• All relevant documentation has been updated, for instance:
  • https://github.com/brave/brave-browser/wiki/Deviations-from-Chromium-(features-we-disable-or-remove)
  • https://github.com/brave/brave-browser/wiki/Proxy-redirected-URLs
  • https://github.com/brave/brave-browser/wiki/Fingerprinting-Protections
  • https://github.com/brave/brave-browser/wiki/Brave%E2%80%99s-Use-of-Referral-Codes
  • https://github.com/brave/brave-browser/wiki/Web-Compatibility-Exceptions-in-Brave
  • https://github.com/brave/brave-browser/wiki/QA-Guide
  • https://github.com/brave/brave-browser/wiki/P3A

Test Plan:

With new update, hamburge menu should like : brave/brave-browser#41591 (comment)

[samartnik]

lgtm

[brave-builds]

Released in v1.73.14

[kjozwiak]

Verification PASSED on Pixel 6 running Android 15 using the following build(s):

Brave | 1.73.22 Chromium: 130.0.6723.58 (Official Build) canary (64-bit)
--- | ---
Revision | 4bf64612a0dd37348839ed716b84d65b8263883a
OS | Android 15; Build/AP41.240823.009; 35; REL

Test Case #1 - brave/brave-browser#41591

Using the STR/Cases outlined via brave/brave-browser#41591 (comment), ensured that Country Code - Optimal is being displayed in the Hamburger Menu when Optimal is selected via the server selection as per the following:

• ensured that Country Code - Optimal is being displayed in the Hamburger Menu when Optimal is selected
• ensured that the Country Code - Location is being displayed in the Hamburger Menu when a specific server is selected

Optimal Examples

Example	Example	Example

Specific servers selected Examples

Example	Example	Example	Example

Test Case #2 - brave/brave-browser#41592

Using the STR/Cases outlined via brave/brave-browser#41592 (comment), ensured that USA is being used as the main string throughout the different menu's (Hamburger Menu being the exception as we're using XX country codes.

Example	Example	Example	Example