[9.4] [Metrics] Pod OTEL metrics table: review follow-ups from #259552 (#262708)

[kibanamachine]

Backport

This will backport the following commits from main to 9.4:

• [Metrics] Pod OTEL metrics table: review follow-ups from #259552 (#262708)

Questions ?

Please refer to the Backport tool documentation

[elasticmachine]

💛 Build succeeded, but was flaky

• Buildkite Build
• Commit: 95153a7

Failed CI Steps

• FTR Configs #3
• FTR Configs #69
• FTR Configs #81
• FTR Configs #166

Test Failures

• [job] [logs] FTR Configs #3 / alerting api integration security and spaces enabled - Group 13 Alerts update space_1_all at space1 should handle updates for a long running alert type without failing the underlying tasks due to invalidated ApiKey

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
metricsDataAccess	82.0KB	81.9KB	-33.0B

cc @rmyz