Buggy Assertion that tends to check for submodule contained in a module

### Describe the bug

The assertion is:
if (receiver.parentModule != module &&
!module.subModules.contains(receiver.parentModule)) {
// This should never happen!
assert(false, 'Receiver is not in this module or a submodule.');
continue;
}
This fails for modules that are optimized out and receiver that is also optimized out.


### To Reproduce

Use a bunch of subset connections in the hierarchy

### Expected behavior

_No response_

### Actual behavior

_No response_

### Additional: Dart SDK info

Dart SDK version: 3.3.3 (stable) (None) on "linux_x64"

### Additional: pubspec.yaml

_No response_

### Additional: Context

_No response_