Normalization: TS2322 vs TS2741

[kdy1]

I decided to normalize TS2741 as TS2322 for alpha because of the following case.

https://www.typescriptlang.org/play?#code/MYGwhgzhAEDC0G9oF8BQpIwCLQKYA8AXXAOwBMZ4kAzAe1oEYAKASkRRXXCmgFE8ipCnHZ1aAJlbtknVGVwYATrmgA3MIuhkAXNCwBuOQvDK1GvLt6HUAehvQAgtACuJAJa0S0QgE8ADioAqtBuMJhuAOYkYABGICqEtNBg3v4qACoh1HhgwAAWqQEhXsGhyVCR0XEJSely0AC8eIYqTWTWZI3NqK1ahkA

class C { }
class D extends C { foo1() { } }
class E extends C { foo2() { } }

declare var d: D;
declare var e: E;

// A union type U is assignable to a type T if each type in U is assignable to T
d = e;
e = d;

d = e;
e = d;

Error

Property 'foo1' is missing in type 'E' but required in type 'D'.
Property 'foo2' is missing in type 'D' but required in type 'E'.
Type 'E' is not assignable to type 'D'.
Type 'D' is not assignable to type 'E'.

So it means we should report TS2741 only for the first error.