Cake's mwebd Go daemon is only built for iOS and Android — no Linux/macOS/
Windows toolchain in their build scripts. ffigen consequently never runs
on those platforms, leaving cw_mweb/lib/mweb_ffi.dart dangling on a
non-existent generated_bindings.g.dart import.
This stub provides type-compatible signatures so the Dart build compiles
on every platform. At runtime, DynamicLibrary.open will fail on desktop
(no libmweb.so/.dll/.dylib shipped) and MWeb features will no-op — standard
non-MWEB Litecoin sends/receives still work fine through cw_bitcoin.
For Android the real bindings are still produced via ffigen against the
libmweb.h Go-generated header, overwriting this stub at build time.
Force-added past the *.g.dart gitignore — this one's a hand-maintained
desktop fallback, not a build artifact.
