[Backport 2.19] Preserve user when stashing thread context when sending alert notification messages. #2027 - #2030

[Backport 2.19] Preserve user when stashing thread context when sending alert notification messages. #2027#2030

AWSHurneyt merged 5 commits into

opensearch-project:2.19opensearch-project/alerting:2.19from

AWSHurneyt:2.19-pr2027-backportAWSHurneyt/OpenSearch-Alerting:2.19-pr2027-backportCopy head branch name to clipboard