[Lens] Improve user messagging

[markov00]

Summary

This PR cleaned up a bit our user messages. In particular:

• marks as required the uniqueId for a UserMessage making it uniquely identifiable across various message renderers (moves toward this objective: [Lens] hide missing fields errors until the data view has some fields #151526)
• adds a unique ID for each UserMessage in Lens
• partially unifies the Error structure between UserMessages and form-based validation.
• Opens the door to provide metadata about the errors, that are currently buried within the text/react node (moves toward this objective: [Lens] hide missing fields errors until the data view has some fields #151526)

Subsequent possible steps, outside this PR:

• add metadata where required for [Lens] hide missing fields errors until the data view has some fields #151526
• merge even more the type of UserMessage, FieldBasedOperationErrorMessage and ValidationErrors
• centralize the messages id and translations
• add a Type for the uniqueId to guide future developments

[elasticmachine]

Pinging @elastic/kibana-visualizations (Team:Visualizations)

[kibana-ci]

💛 Build succeeded, but was flaky

• Buildkite Build
• Commit: 72eeb44

Failed CI Steps

• Jest Tests #7

Test Failures

• [job] [logs] Jest Tests #7 / useGetEndpointActionList hook should call the proper API

Metrics [docs]

Module Count

Fewer modules leads to a faster build time

id	before	after	diff
lens	1475	1476	+1

Async chunks

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

id	before	after	diff
lens	1.5MB	1.5MB	+4.7KB

History

• 💛 Build #213817 was flaky 1371dd7
• 💛 Build #212569 was flaky 6630bc8
• 💛 Build #212454 was flaky 6ff5507
• 💔 Build #212418 failed 972cb7b
• 💔 Build #212336 failed 343d62f
• 💔 Build #212080 failed 9ce2275

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@elasticmachine merge upstream