Since you didn’t see any from eWeLink, there are no accompanying scene/binding options, at least for the app/WEB. You can, alternatively, combine multiple platforms to do automation via Matter or other integration.
TBH I am amazed that Sonoff do not have a dimmer in their range.
This is a basic device type when considering smart home requirements. It has always bothered me than to expand my Sonoff ecosystem means I have to lose basic features provided by other ecosystems.
It is particularly bothering when they keep adding new devices, like leak detectors and hose tap controls which are not basic smart home requirements, and they release updated versions of their existing range.