Yes it does[1] and it works on Desktop, mobile and web.
JavaFX has SceneBuilder[2] which also fit the description but for some reason, it never caught on. Gluon seems to have that work not only on desktop, but also on mobile.
Of course... it's a very different tech. Flutter's graphics are based on Skia[1], same as used in Android and Chrome. Dart compiles to actual executable binaries, so it's not at all like Electron.
JavaFX has SceneBuilder[2] which also fit the description but for some reason, it never caught on. Gluon seems to have that work not only on desktop, but also on mobile.
[1] https://docs.flutter.dev/development/tools/devtools/overview
[2] https://gluonhq.com/products/scene-builder/