liClass property of NavLi isn't applied to the <li> element

[kevinwright]

Describe the bug

The implementation is:

<li>
  <svelte:element ... class={liClass}>
    <slot />
  </svelte:element>
</li>

Not only does this mean that the name "li class" an outright lie (it should be something like contentClass), it also means that there is no way to change the class of the <li> element, nor is there a static class allowing it to be changed via css.

Reproduction

n/a

Flowbite version and System Info

Present in latest version. Bug is agnostic to browser, etc.