Go to https://www.mediawiki.org/wiki/User:Amire80/be-bullet-heading?veaction=edit, which contains the wikitext:
* list item 1 * list item 2 * list item 3 ==Heading== paragraph text
Press Shift-↓ (down arrow) three times.
The first time, the first list item is selected.
The second time, the second list item is selected.
The third time, the third list item AND the heading are selected.
Selecting the heading should require a forth press of Shift-↓.