Bad error message for invalid code

[thewilsonator]

see #19546 #9495

a.d:

module a;

struct X {
	import b : Baz;
	Err err;
}

b.d:

module b;

struct Baz {
}

struct Qux {
	import c;
}

c.d:

module c;

struct Foo {
	import a : X;
	X[] x;
}

Nullable!Foo foo() {
	Nullable!Foo output;
	return output;
}

struct Nullable(T)
{
    bool opEquals(U)(const(U) rhs) const
    if (is(typeof(this.get == rhs)))
    {
        return true;
    }

    inout(T) get() inout
    {
        return T.init;
    }
}

yields

Error: struct `ice19762.X` had semantic errors when compiling