`NcActionInput` comment in placeholder does not work

I noticed that it does not work to add a comment in the default slot (for the placeholder).

Meaning this will not show any placeholder ❌ :

<NcActionInput :value="regex">
	<template #icon>
		<IconRegex :size="20" />
	</template>
	<!-- This a example regex for the placeholder -->
	/^[a-z]{3}$/i
</NcActionInput>

But it works if I switch the order ✔️ :

<NcActionInput :value="regex">
	<template #icon>
		<IconRegex :size="20" />
	</template>
	/^[a-z]{3}$/i
	<!-- ^ This a example regex for the placeholder -->
</NcActionInput>

Start at the NcActionInput component and reproduce the two default-slot examples to inspect how slot content becomes the placeholder. Check the component's existing tests, if present, and confirm that comments around the default-slot content no longer prevent the placeholder from appearing.