fix(app): reduce free model logo width

packages/app/src/components/prompt-input.tsx

@@ -2362,7 +2362,7 @@ function ModelProviderIcon(props: { providerID?: string; free: boolean }) {
           }
         >
           <span class="size-4 shrink-0 flex items-center justify-center opacity-40 group-hover:opacity-100 transition-opacity duration-150">
-            <Mark class="h-4 w-3.5" />
+            <Mark class="h-4 w-3" />
           </span>
         </Show>
       )}