[next] fix(NcListItemIcon): correctly use default slot in examples

[raimund-schluessler]

☑️ Resolves

• This brings back the icons in the NcListItemIcon examples. I couldn't really figure out why it doesn't work when simply using <template>. It only works when not wrapping the default slot content, or when using <template #default>.

🖼️ Screenshots

🏚️ Before	🏡 After

[ShGKme]

I couldn't really figure out why it doesn't work when simply using <template>. It only works when not wrapping the default slot content, or when using <template #default>.

In Vue 3 <template> has special meaning only in combination with directives (v-if, v-for, v-slot). Otherwise, it works as an original HTML element <template>. (Though, I have no idea why anyone would need native <template> in a Vue template).

https://template-explorer.vuejs.org/#eyJzcmMiOiI8ZGl2PlxyXG4gIDx0ZW1wbGF0ZT5cclxuICAgIENvbnRlbnRcclxuICA8L3RlbXBsYXRlPlxyXG48L2Rpdj4iLCJvcHRpb25zIjp7fX0=

And there is no ESLint rule for that...

[susnux]

And there is no ESLint rule for that...

@ShGKme I think vue/no-lone-template is about that?

[ShGKme]

And there is no ESLint rule for that...

@ShGKme I think vue/no-lone-template is about that?

I really searched 🙈

Though, I guess it won't help in this case because it is in a code-block in a markdown...