[8.18] [A11y][APM] Add aria-label to technical preview badge (#216483)

[kibanamachine]

Backport

This will backport the following commits from main to 8.18:

• [A11y][APM] Add aria-label to technical preview badge (#216483)

Questions ?

Please refer to the Backport tool documentation

[elasticmachine]

Pinging @elastic/obs-ux-infra_services-team (Team:obs-ux-infra_services)

[elasticmachine]

💛 Build succeeded, but was flaky

• Buildkite Build
• Commit: 8a91d1b

Failed CI Steps

• Quick Checks
• FTR Configs #62

Test Failures

• [job] [logs] FTR Configs #62 / machine learning - permissions "after all" hook in "machine learning - permissions"
• [job] [logs] FTR Configs #62 / machine learning - permissions for user with full ML access with no data loaded (ft_ml_poweruser) "after all" hook for "should display elements on ML Overview page correctly"
• [job] [logs] FTR Configs #62 / machine learning - permissions for user with full ML access with no data loaded (ft_ml_poweruser) "before all" hook for "should display the ML entry in Kibana app menu"

Metrics [docs]

Async chunks

Total size of all lazy-loaded chunks that will be downloaded as the user navigates the app

id	before	after	diff
apm	2.6MB	2.6MB	+330.0B

History

• 💔 Build #291371 failed f2ceafa
• 💔 Build #291368 failed f2ceafa

cc @rmyz