## Summary
Fix https://github.com/elastic/kibana/issues/161424
Migrate away from deprecated EUI components for Core-owned code.
Note: I only tested the production (and examples) pages properly, I
didn't make sure the test plugins where displayed correctly, as long as
the data structure was still here for the tests to pass.
### Screenshots
#### Status page
<img width="1388" alt="Screenshot 2023-07-10 at 17 14 24"
src="d15adffa-d4fb-4dab-ad91-691a4c103541">
#### AppNotFound page
<img width="1352" alt="Screenshot 2023-07-10 at 17 14 40"
src="77dcc958-db53-4ec8-9a7f-af4ea0804a96">
#### Generated plugin landing page
<img width="1906" alt="Screenshot 2023-07-10 at 17 15 44"
src="7a45d1a3-181d-44c5-a4a1-d3bdb2ba6ee9">
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Co-authored-by: Kibana Machine <42973632+kibanamachine@users.noreply.github.com>
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