Manually migrate PHP-FPM visualizations to lens in kibana version 8.4.0.

Preparation of data for testing

• Use sample_event.json / setup live instance using docker / mock data using mock server to populate dashboards

Migration stats

Data stream : Process

• Migrate 1 visualizations to the lens
  • [O11y][PHP-FPM] Lens migration for visualizations to kibana version 8.4.0  #5521

Verification and Validation

• Verification of functionality remains the same after migration in kibana
• Verification of data count of after-migrated visualization with before-migrated visualization in kibana
• Verification of Dashboard are not distorted in supported kibana version (8.4.0)

Issues Identified

• Show value in legend feature does not show default values in legend. It will only appear in legend when user hover over the chart.
  • [Lens] Area/line charts report last bucket empty kibana#153079