radio group: remove justify center in horizontal layout

src/lib/RadioGroup.svelte

@@ -32,7 +32,7 @@
 	{#if label}
 		<Label {...group.label}>{label}</Label>
 	{/if}
-	<div class="flex {isVert ? 'flex-col gap-1' : 'flex-row flex-wrap justify-center gap-3'}">
+	<div class="flex {isVert ? 'flex-col gap-1' : 'flex-row flex-wrap gap-3'}">
 		{#each options as opt (getValue(opt))}
 			{@const item = group.getItem(getValue(opt))}
 			<div