🧊 refactor: iconURL Handling in Submission Flow (#10772)

- Updated `useChatFunctions` to derive `iconURL` from conversation data before parsing
- Modified `parseCompactConvo` to explicitly omit `iconURL` from parsed conversations, reinforcing security measures around URL handling.

client/src/hooks/Chat/useChatFunctions.ts

@@ -168,6 +168,7 @@ export default function useChatFunctions({
 
     const endpointsConfig = queryClient.getQueryData<TEndpointsConfig>([QueryKeys.endpoints]);
     const endpointType = getEndpointField(endpointsConfig, endpoint, 'type');
+    const iconURL = conversation?.iconURL;
 
     /** This becomes part of the `endpointOption` */
     const convo = parseCompactConvo({
@@ -248,9 +249,9 @@ export default function useChatFunctions({
       conversationId,
       unfinished: false,
       isCreatedByUser: false,
-      iconURL: convo?.iconURL,
       model: convo?.model,
       error: false,
+      iconURL,
     };
 
     if (isAssistantsEndpoint(endpoint)) {