Deselecting "examples" from the installer options causes the webDAV servlets not to install. I toggled off "documentation", "NT services", "examples", etc. for seperate installations, and the "webDAV" directory and all of the webdav resources appear to install properly with the exception of when "examples" is deselected. If this is by design, then it is unintutive.
I have updated the installer to use the modern UI and taken the opportunity to add descriptions for each of the components. The description makes it clear that the examples includes both the JSP/servlet examples and the WebDAV example.