combobox: improve compact item spacing & spinner centering

src/lib/Combobox.svelte

@@ -401,7 +401,10 @@
 					aria-label={getLabel(item)}
 					aria-disabled={item.disabled}
 					class={[
-						'mb-0.5 flex min-h-10 flex-wrap items-center py-2.5 pr-1.5 pl-5',
+						!compact
+							? 'mb-0.5 min-h-10 py-2.5 pr-1.5 pl-5'
+							: 'mb-0.25 min-h-8 py-1.5 pr-1.5 pl-2.5',
+						'flex flex-wrap items-center',
 						'rounded-sm text-sm capitalize outline-hidden select-none',
 						'hover:bg-sui-accent-500/30 dark:hover:bg-sui-accent-700/30',
 						item.value === highlighted?.value && 'bg-sui-accent-500/80 dark:bg-sui-accent-700/80',
@@ -496,7 +499,7 @@
 				transition:scale
 			>
 				{#if loading}
-					<Spinner class="stroke-sui-accent!" size="1em" />
+					<Spinner class="stroke-sui-accent! -mt-0.5" size="1em" />
 				{:else if useHighlighted && highlighted?.icon}
 					{@render highlighted.icon(highlighted)}
 				{:else if value?.icon}