DDC does not generate correct bindings for async operations in spread,
resulting in errors on member accesses.
```
class A {
m1() => [1, 2];
Future run() async {
return [await null, ...m1()];
}
}
```
Another case with yield:
```
class C {
List<int> m2() => [1, 2];
Future run() async {
return await run3().toList();
}
Stream<int> run3() async* {
for(var k in [... await m2()])
yield k;
}
}
```
Fixes#38896
Change-Id: I6ea28080414e5843ab647516cc223fd218f8c17e
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/123465
Reviewed-by: Mark Zhou <markzipan@google.com>
Reviewed-by: Sigmund Cherem <sigmund@google.com>
Commit-Queue: Anna Gringauze <annagrin@google.com>
Anna Gringauze