Update ToolUpdate.svelte

Author: gary149

src/lib/components/chat/ToolUpdate.svelte

@@ -60,7 +60,7 @@
 
 {#if toolFnName}
 	<details
-		class="group/tool my-2.5 w-fit max-w-full cursor-pointer rounded-lg border border-gray-200 bg-white pl-1 pr-2.5 text-sm shadow-sm transition-all open:mb-3 open:border-purple-500/10 open:bg-purple-600/5 open:shadow-sm dark:border-gray-800 dark:bg-gray-900 open:dark:border-purple-800/40 open:dark:bg-purple-800/10 [&+details]:-mt-2"
+		class="group/tool my-2.5 w-fit max-w-full cursor-pointer rounded-lg border border-gray-200 bg-white pl-1 pr-2.5 text-sm shadow-sm transition-all first:mt-0 open:mb-3 open:border-purple-500/10 open:bg-purple-600/5 open:shadow-sm dark:border-gray-800 dark:bg-gray-900 open:dark:border-purple-800/40 open:dark:bg-purple-800/10 [&+details]:-mt-2"
 	>
 		<summary
 			class="relative flex select-none list-none items-center gap-1.5 py-1 group-open/tool:text-purple-700 group-open/tool:dark:text-purple-300"