Add Expand macro to selected text

When you select a text in the editor and go to add the Panel macro, that text is automatically added in a panel. This is the same idea here, when we select a text and go to add the Expand macro, the text jumps to directly to the expand macro box.

This kind of action could be applied not only to a few features, but to every feature we can, once it provides a better editing experience from the user's perspective