feat: add onPreMessage handler to process pre-messages in knowledge assistant

apps/app/src/features/openai/client/components/AiAssistant/AiAssistantSidebar/AiAssistantSidebar.tsx

@@ -249,6 +249,9 @@ const AiAssistantSidebarSubstance: React.FC<AiAssistantSidebarSubstanceProps> =
             const data = JSON.parse(line.replace('data: ', ''));
 
             processMessageForKnowledgeAssistant(data, {
+              onPreMessage: (data) => {
+                textValues.push(data.text);
+              },
               onMessage: (data) => {
                 textValues.push(data.content[0].text.value);
               },

apps/app/src/features/openai/client/services/knowledge-assistant.tsx

@@ -10,7 +10,9 @@ import {
 } from 'reactstrap';
 
 import { apiv3Post } from '~/client/util/apiv3-client';
-import { SseMessageSchema, type SseMessage } from '~/features/openai/interfaces/knowledge-assistant/sse-schemas';
+import {
+  SseMessageSchema, type SseMessage, SsePreMessageSchema, type SsePreMessage,
+} from '~/features/openai/interfaces/knowledge-assistant/sse-schemas';
 import { handleIfSuccessfullyParsed } from '~/features/openai/utils/handle-if-successfully-parsed';
 
 import type { MessageLog, MessageWithCustomMetaData } from '../../interfaces/message';
@@ -31,7 +33,9 @@ interface PostMessage {
 
 interface ProcessMessage {
   (data: unknown, handler: {
-    onMessage: (data: SseMessage) => void}
+    onMessage: (data: SseMessage) => void
+    onPreMessage: (data: SsePreMessage) => void
+  }
   ): void;
 }
 
@@ -121,6 +125,10 @@ export const useKnowledgeAssistant: UseKnowledgeAssistant = () => {
     handleIfSuccessfullyParsed(data, SseMessageSchema, (data: SseMessage) => {
       handler.onMessage(data);
     });
+
+    handleIfSuccessfullyParsed(data, SsePreMessageSchema, (data: SsePreMessage) => {
+      handler.onPreMessage(data);
+    });
   }, []);
 
   // Views