Missing error when referencing deleted interface types

[nshahan]

Similar to #60209

Types should not be usable after a hot reload that deletes them.

Generation 0:

class A {}

var retained;

void helper() {
  retained = () {
    var a = <A>[];
    print(a.runtimeType);
  };
retained();
}

Generation 1:

var retained;

void helper() {
  retained();  // <-- Should throw an error
}

Unclear what type of error this should be.