Type attribute is hardcoded to x-canonical-type
The renamed type attribute is x-ayatana-type
which has been supported since qmenumodel@fa430b5. gmenuharness is hardcoded to x-canonical-type
preventing any consumers such as lomiri-indicator-network from using the x-ayatana-type
attribute. Unfortunately, the current API does not allow for a fallback, see https://gitlab.com/ubports/development/core/gmenuharness/-/blob/e39664917c09c3d8580a041182d6fce41de29863/src/MenuItemMatcher.cpp#L311.