Change default value of useExpandedHeader to false

[yenienserrano]

Description

The default value of the useExpandedHeader is changed to false so that the default black bar is hidden and to display it you have to use the setting

Issues Resolved

• The black line in the header appears #241

Test

1. Remove the useExpandedHeader setting from opensearch_dashboard.yml file
2. See that the black header bar does not appear.
3. Add the useExpandedHeader setting with the value true
4. See that the black header bar appear.

opensearchDashboards.branding:
  useExpandedHeader: true

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

[Desvelao]

Due to the value by default changed from true to false to not display the expander header, we could the explicit setting on the configuration file of Wazuh dashboard.

[Desvelao]

Test

Legend:
⚫: none
🟢: pass
🟡: warning
🔴: fail
⚪: not applicable

UI

Test	Chrome	Firefox	Safari
By default, the expanded header should not appear	🟢	⚫	⚫
Add the setting to enable the expanded header should display it	🟢	⚫	⚫

Details

🟢 By default, the expanded header should not appear

Chrome - 🟢

Firefox - ⚫

Safari - ⚫

🟢 Add the setting to enable the expanded header should display it

Chrome - 🟢

Firefox - ⚫

Safari - ⚫

[Desvelao]

LGTM!

[Desvelao]

LGTM!