[9.2] Update EUI to 106.6.0-backport.1

[tkajtoch]

Important

This PR updates a backport EUI release to include a bug fix for Kibana 9.2

• @elastic/eui: v106.6.0-backport.0 ⏩ v106.6.0-backport.1

Package updates

@elastic/eui

Bug fixes

• Fixed EuiInMemoryTable not firing the search.onChange callback when searchFormat equals text. (#9059)

[elasticmachine]

Pinging @elastic/eui-team (EUI)

[elasticmachine]

💛 Build succeeded, but was flaky

• Buildkite Build
• Commit: e581e97

Failed CI Steps

• x-pack/platform/test/alerting_api_integration/spaces_only/tests/alerting/group1/config.ts
• x-pack/solutions/observability/test/serverless/functional/configs/config.ts
• FTR Configs #61

Test Failures

• [job] [logs] x-pack/platform/test/alerting_api_integration/spaces_only/tests/alerting/group1/config.ts / Alerting getActionErrorLog get and filter action error logs for rules with multiple action errors
• [job] [logs] x-pack/solutions/observability/test/serverless/functional/configs/config.ts / serverless observability UI discover/observabilitySolution/context_awareness extension getCellRenderers data view mode Service Name Cell should render service.name cell

Metrics [docs]

Page load bundle

Size of the bundles that are downloaded on every page load. Target size is below 100kb

id	before	after	diff
kbnUiSharedDeps-npmDll	6.5MB	6.5MB	+110.0B

cc @tkajtoch