Fix MessageContext exhaustive-deps for CI builds

Stabilize schedulePostStreamRefetch with useCallback so CI=true ESLint no longer fails beta deploy.

llm-fe/src/llm-fe/contexts/MessageContext.tsx

@@ -1,4 +1,4 @@
-import { createContext, ReactNode, useContext, useEffect, useRef, useState } from "react";
+import { createContext, ReactNode, useCallback, useContext, useEffect, useRef, useState } from "react";
 import { WebSocketContext } from "./WebSocketContext";
 import { AccountContext } from "./AccountContext";
 import { ConversationContext } from "./ConversationContext";
@@ -128,7 +128,7 @@ const MessageProvider = ( {children}: MessageProviderProps) => {
         }
     }
 
-    const schedulePostStreamRefetch = () => {
+    const schedulePostStreamRefetch = useCallback(() => {
         if (refetchTimerRef.current) clearTimeout(refetchTimerRef.current)
         const conversationId = selectedConversationRef.current
         if (!conversationId) return
@@ -137,7 +137,7 @@ const MessageProvider = ( {children}: MessageProviderProps) => {
         refetchTimerRef.current = setTimeout(() => {
             void GetConversationDetails(conversationId)
         }, 800)
-    }
+    }, [])
 
     useEffect(() => {
         GetConversationDetails(selectedConversation)
@@ -316,7 +316,7 @@ const MessageProvider = ( {children}: MessageProviderProps) => {
             /* unsubscribe from channel during cleanup */
             unsubscribe(channelName)
         }
-    }, [account, subscribe, unsubscribe, conversationDetails, selectedConversation, setSelectedConversation])
+    }, [account, subscribe, unsubscribe, conversationDetails, selectedConversation, setSelectedConversation, schedulePostStreamRefetch])
 
 
     return(