[Maps] capture metrics for layer_groups in telemetry

[nreese]

Follow up to #142528.

Ensure telemetry is properly captured for Layer groups.

[elasticmachine]

Pinging @elastic/kibana-gis (Team:Geo)

[nickpeihl]

lgtm!

code review and tested the captured telemetry

[nreese]

@elasticmachine merge upstream

[kibana-ci]

💚 Build Succeeded

• Buildkite Build
• Commit: 6114f8d

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
maps	2.7MB	2.7MB	+78.0B

Unknown metric groups

ESLint disabled in files

id	before	after	diff
osquery	1	2	+1

ESLint disabled line counts

id	before	after	diff
enterpriseSearch	19	21	+2
fleet	57	63	+6
osquery	103	108	+5
securitySolution	439	443	+4
total			+17

Total ESLint disabled count

id	before	after	diff
enterpriseSearch	20	22	+2
fleet	65	71	+6
osquery	104	110	+6
securitySolution	516	520	+4
total			+18

History

• 💚 Build #83188 succeeded 87d44bd
• 💔 Build #82985 failed e623b0f
• 💔 Build #82979 failed 62f7cd1
• 💔 Build #82973 failed 3c93155

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@elasticmachine merge upstream