[8.18] Fix AlibabaCloudSearchCompletionAction not accepting ChatCompletionInputs (#125023)#125416

dan-rubinstein merged 2 commits intoelastic:8.18elastic/elasticsearch:8.18from

dan-rubinstein:backport/8.18/pr-125023dan-rubinstein/elasticsearch:backport/8.18/pr-125023Copy head branch name to clipboard