Update sample data page UI when useUpdatedUX enabled

[wanglam]

Description

This PR is for updating the sample data page UI when useUpdatedUX enabled. It mainly includes below changes:

• Move data source selector to the top right to align with other pages
• Remove duplicate sample data title

Issues Resolved

#8312

Screenshot

Testing the changes

• Clone branch code and run yarn osd bootstrap --single-version ignore
• Add below configs in config/opensearch_dashboards.yml

savedObjects.permission.enabled: true
workspace.enabled: true
uiSettings:
  overrides:
    'home:useNewHomePage': true
opensearchDashboards.dashboardAdmin.users: ['admin']

• Run yarn start --no-base-path
• Login with admin user and enter a specific workspace
• Click "Sample data" in the left navigation
• The UI should be the same with above screenshot

Changelog

• feat: Update sample data page UI when useUpdatedUX enabled

Check List

• All tests pass
  • yarn test:jest
  • yarn test:jest_integration
• New functionality includes testing.
• New functionality has been documented.
• Update CHANGELOG.md
• Commits are signed per the DCO using --signoff

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[codecov]

Codecov Report

Attention: Patch coverage is 78.26087% with 5 lines in your changes missing coverage. Please review.

Project coverage is 60.90%. Comparing base (8691010) to head (5f354fc).
Report is 165 commits behind head on main.

Files with missing lines	Patch %	Lines
src/plugins/home/public/plugin.ts	0.00%	4 Missing ⚠️
...ublic/application/components/tutorial_directory.js	94.44%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #8291      +/-   ##
==========================================
- Coverage   60.92%   60.90%   -0.03%     
==========================================
  Files        3749     3749              
  Lines       89021    89034      +13     
  Branches    13899    13899              
==========================================
- Hits        54236    54222      -14     
- Misses      31423    31494      +71     
+ Partials     3362     3318      -44     

Flag	Coverage Δ
Linux_1	28.85% <0.00%> (ø)
Linux_2	?
Linux_3	37.75% <0.00%> (?)
Linux_4	29.96% <78.26%> (+0.01%)	⬆️
Windows_1	28.87% <0.00%> (ø)
Windows_2	56.30% <ø> (ø)
Windows_3	37.76% <0.00%> (-0.01%)	⬇️
Windows_4	29.96% <78.26%> (+0.01%)	⬆️

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[Hailong-am]

do we need this change for home page?

[wanglam]

The page will be broken if we visit /app/home#/tutorial_directory directly. To align with the latest design, I think we should render the same UI for this entry.