[7.x] load empty_kibana in test to have clean starting point (#82772)

[LeeDr]

Backports the following commits to 7.x:

• load empty_kibana in test to have clean starting point (load empty_kibana in test to have clean starting point #82772)

[LeeDr]

@elasticmachine merge upstream

[kibanamachine]

💚 Build Succeeded

• continuous-integration/kibana-ci/pull-request
• Commit: 67cbad4

Metrics [docs]

✅ unchanged

History

• 💚 Build #86955 succeeded 96909fa

To update your PR or re-run it, just comment with:
@elasticmachine merge upstream