feat: use saveChatCompletion in handleChatStream to match handleChatGenerate (MYC-3962)#135

sweetmantech wants to merge 2 commits intotestRecoupable-com/Recoup-API:testfrom

sweetmantech/myc-3962-add-message-persistence-to-apichat-match-apichatgenerateRecoupable-com/Recoup-API:sweetmantech/myc-3962-add-message-persistence-to-apichat-match-apichatgenerateCopy head branch name to clipboard