fix: merged response should be used in messages payload

src/lib/components/chat/Chat.svelte

@@ -1070,7 +1070,7 @@
 				// Prepare the base message object
 				const baseMessage = {
 					role: message.role,
-					content: message.content
+					content: message?.merged?.content ?? message.content
 				};
 
 				// Extract and format image URLs if any exist
@@ -1535,10 +1535,7 @@
 										content: [
 											{
 												type: 'text',
-												text:
-													arr.length - 1 !== idx
-														? message.content
-														: (message?.raContent ?? message.content)
+												text: message?.merged?.content ?? message.content
 											},
 											...message.files
 												.filter((file) => file.type === 'image')
@@ -1551,10 +1548,7 @@
 										]
 									}
 								: {
-										content:
-											arr.length - 1 !== idx
-												? message.content
-												: (message?.raContent ?? message.content)
+										content: message?.merged?.content ?? message.content
 									})
 						})),
 					seed: params?.seed ?? $settings?.params?.seed ?? undefined,