[7.x] [EventLog] Added event log API to get events for multiple saved objects. (#87596)

[YulNaumenko]

Backports the following commits to 7.x:

• [EventLog] Added event log API to get events for multiple saved objects. ([EventLog] Added event log API to get events for multiple saved objects. #87596)

[kibanamachine]

💛 Build succeeded, but was flaky

• continuous-integration/kibana-ci/pull-request
• Commit: 251397b
• Flaky suites:
  • xpack-kibana-ciGroup5

---

Test Failures

X-Pack Case API Integration Tests.x-pack/test/case_api_integration/basic/tests/cases/tags/get_tags·ts.case api basic get_tags should return case tags

Link to Jenkins

Standard Out

Failed Tests Reporter:
  - Test has not failed recently on tracked branches

[00:00:00]       │
[00:00:00]         └-: case api basic
[00:00:00]           └-> "before all" hook
[00:04:59]           └-: get_tags
[00:04:59]             └-> "before all" hook
[00:04:59]             └-> should return case tags
[00:04:59]               └-> "before each" hook: global before each
[00:05:03]               └- ✖ fail: case api basic get_tags should return case tags
[00:05:03]               │       Error: expected [ 'unique', 'defacement' ] to sort of equal [ 'defacement', 'unique' ]
[00:05:03]               │       + expected - actual
[00:05:03]               │ 
[00:05:03]               │        [
[00:05:03]               │       +  "defacement"
[00:05:03]               │          "unique"
[00:05:03]               │       -  "defacement"
[00:05:03]               │        ]
[00:05:03]               │       
[00:05:03]               │       at Assertion.assert (/dev/shm/workspace/parallel/2/kibana/packages/kbn-expect/expect.js:100:11)
[00:05:03]               │       at Assertion.eql (/dev/shm/workspace/parallel/2/kibana/packages/kbn-expect/expect.js:244:8)
[00:05:03]               │       at Context.<anonymous> (test/case_api_integration/basic/tests/cases/tags/get_tags.ts:38:23)
[00:05:03]               │       at Object.apply (/dev/shm/workspace/parallel/2/kibana/packages/kbn-test/src/functional_test_runner/lib/mocha/wrap_function.js:84:16)
[00:05:03]               │ 
[00:05:03]               │ 

Stack Trace

Error: expected [ 'unique', 'defacement' ] to sort of equal [ 'defacement', 'unique' ]
    at Assertion.assert (/dev/shm/workspace/parallel/2/kibana/packages/kbn-expect/expect.js:100:11)
    at Assertion.eql (/dev/shm/workspace/parallel/2/kibana/packages/kbn-expect/expect.js:244:8)
    at Context.<anonymous> (test/case_api_integration/basic/tests/cases/tags/get_tags.ts:38:23)
    at Object.apply (/dev/shm/workspace/parallel/2/kibana/packages/kbn-test/src/functional_test_runner/lib/mocha/wrap_function.js:84:16) {
  actual: '[\n  "unique"\n  "defacement"\n]',
  expected: '[\n  "defacement"\n  "unique"\n]',
  showDiff: true
}

---

Metrics [docs]

✅ unchanged

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