Fix to show tabs on mobile, restyle tabs

[jpye-finch]

Description

CC PR: opencrvs/opencrvs-countryconfig#1258

Resolves #11649

• Move tabs to center
• Fix to show tabs on second row on appbar on mobile

Desktop:

Mobile:

Checklist

• I have linked the correct Github issue under "Development"
• I have tested the changes locally, and written appropriate tests
• I have tested beyond the happy path (e.g. edge cases, failure paths)
• I have updated the changelog with this change (if applicable)
• I have updated the GitHub issue status accordingly

[github-actions]

Oops! Looks like you forgot to update the changelog. When updating CHANGELOG.md, please consider the following:

• Changelog is read by country implementors who might not always be familiar with all technical details of OpenCRVS. Keep language high-level, user friendly and avoid technical references to internals.
• Answer "What's new?", "Why was the change made?" and "Why should I care?" for each change.
• If it's a breaking change, include a migration guide answering "What do I need to do to upgrade?".

[github-actions]

ℹ️ Coverage metrics explained:
• Statements — Executed code statements (basic logic lines)
• Branches — Tested decision paths (if/else, switch, ternaries)
• Functions — Functions invoked during tests
• Lines — Source lines executed

[github-actions]

📊 commons test coverage

Statements: 67.08%
Branches:   32.63%
Functions:  49.94%
Lines:      66.48%
Updated at: Fri, 06 Feb 2026 07:47:53 GMT

[github-actions]

📊 events test coverage

Statements: 86.48%
Branches:   84.62%
Functions:  93.02%
Lines:      86.48%
Updated at: Fri, 06 Feb 2026 07:53:04 GMT

[cibelius]

Tests passed here: https://github.com/opencrvs/e2e/actions/runs/21744101932