### Description When defining a `gl-disclosure-dropdown-item` either an `action` or an `href` can be included to render an item. However, in some cases we would like to render more complex controls inside dropdown items, which may include multiple links ### Example use case We would like to use dropdowns to render a list of jobs, in each dropdown item we could like to have an icon, a link to the job and an optional "action" (to retry or run manual jobs).  My proposed pseudo code would look like this: ```vue <gl-disclosure-dropdown> <gl-disclosure-dropdown-item v-for="j in jobs" :key="j.id"> <template #list-item> <gl-icon ...> <gl-link :href="j.url" > {{ j.name }} <gl-link/> <gl-button ...> </template> </gl-disclosure-dropdown-item> </gl-disclosure-dropdown> ``` Importantly, I leverage the fact that the `:item` prop is optional to render a simple `div` when actions **can be contained** in the dropdown item and not directly _part_ of the dropdown item