Add id attributes for better element identification

Updated ResponseMessage.svelte

Update Sidebar.svelte

src/lib/components/chat/Messages/ResponseMessage.svelte

@@ -620,7 +620,7 @@
 		<div class="flex-auto w-0 pl-1 relative">
 			<Name>
 				<Tooltip content={model?.name ?? message.model} placement="top-start">
-					<span class="line-clamp-1 text-black dark:text-white">
+					<span id="response-message-model-name" class="line-clamp-1 text-black dark:text-white">
 						{model?.name ?? message.model}
 					</span>
 				</Tooltip>