redux-orm broken by #43624

The nightly dtslint run for 4/28 fails on redux-orm, with new errors on examples like:

export default class Model<MClass extends typeof AnyModel = typeof AnyModel, Fields extends ModelFieldMap = any> {
    // ...
    readonly ref: Ref<this>;
    // ...
}
export class AnyModel extends Model {}
export type Ref<M extends AnyModel> = {
    [K in keyof RefFields<M>]: ModelFields<M>[K] extends AnyModel ? IdType<ModelFields<M>[K]> : RefFields<M>[K];
};

ERROR: 118:23  expect  TypeScript@4.3 compile error: 
Type 'this' does not satisfy the constraint 'AnyModel'.
  Type 'Model<MClass, Fields>' is not assignable to type 'Model<typeof AnyModel, any>'.
    Type 'typeof AnyModel' is not assignable to type 'MClass'.
      'typeof AnyModel' is assignable to the constraint of type 'MClass', but 'MClass' could be instantiated with a different subtype of constraint 'typeof AnyModel'.

Almost certainly a result of https://github.com/microsoft/TypeScript/pull/43624, but it could be #42449 or #43835, since they went in on the same day.

If this is an intended result of that PR, can you fix up redux-orm? A naive change to Ref<M extends Model> doesn't work.