[8.0] [Fleet] Avoid breaking setup when compatible package is not available in registry (#125525)

[kibanamachine]

Backport

This is an automatic backport to 8.0 of:

• [Fleet] Avoid breaking setup when compatible package is not available in registry #125525
• [Fleet] Use registry version check on main #125495
• [Fleet] Get package info should not store the whole package #123509

Questions ?

Please refer to the Backport tool documentation

[kibana-ci]

💚 Build Succeeded

• Buildkite Build
• Commit: ca6dcea
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Metrics [docs]

Public APIs missing comments

Total count of every public API that lacks a comment. Target amount is 0. Run node scripts/build_api_docs --plugin [yourplugin] --stats comments for more detailed information.

id	before	after	diff
fleet	1160	1159	-1

Unknown metric groups

API count

id	before	after	diff
fleet	1272	1271	-1

History

• 💔 Build #24291 failed f75c051

To update your PR or re-run it, just comment with:
@elasticmachine merge upstream

cc @joshdover