testing/resources: Use correct profile for builds

Resources has a default profile and a development profile. The development profile is meant to be used for nightly development builds, and the default profile is meant to be used for releases and distribution.

With no flags specified, Resources counterintuitively uses the "development" profile as the default, meaning we get the development styling, icon, and app ID instead of the regular look and ID.

This commit ensures we use the right profile.