[Index Management] Migrate flaky integration tests to unit tests#258942

kapral18 merged 5 commits intoelastic:mainelastic/kibana:mainfrom

kapral18:chore/index_management/fix-mappings-editor-flaky-tests-253534kapral18/kibana:chore/index_management/fix-mappings-editor-flaky-tests-253534Copy head branch name to clipboard