Added support for Mistral-7B-Instruct-v0.2 model in the Playground component.

src/lib/components/Playground/Playground.svelte

@@ -12,7 +12,7 @@
 	const startMessages: Message[] = [{ role: 'user', content: '' }];
 	const compatibleModels: string[] = [
 		'meta-llama/Meta-Llama-3-8B-Instruct',
-		'mistralai/Mistral-7B-Instruct-v0.3'
+		'mistralai/Mistral-7B-Instruct-v0.2'
 	];
 
 	let hfToken: string | null = '';