Both `CodeExampleComponent` and `CodeTabsComponent` components receive
some code via content projection, grab the projected content and pass it
through to a `CodeComponent` instance for formatting and displaying.
Previously, the projected content was kept in the DOM (hidden). This
unnecessarily increased the number of DOM nodes.
This commit fixes this by clearing the projected DOM nodes once their
content has been captured.
PR Close#40802
George Kalpakas
8f7fea4ad8