Checker: direct reads of later class fields omit TS2729 #3581

The checker accepts a direct class field read before the referenced field is initialized.

class C {
    z = this.y;
    y = 1;
}

Pinned TypeScript 6.0.3 with --ignoreConfig --strict --noEmit reports TS2729 at this.y (Property 'y' is used before its initialization). SharpTS exits successfully with --no-tsconfig --strict --noEmit on frozen cabb41636 (CLI SHA-256 5335B14C2A96172D0372D8FCDD75264741EB8A0B19C0273737C3BBF2967D3ACE) and PR #3577 head cc5f1af6b.

A read deferred until after construction, such as z = () => this.y, should remain valid. #3554 concerns recovering the type of a field that depends on a cyclic getter. This source has no getter, cycle, closure, inheritance, or constructor body. Found while comparing #3577's automated review example against TypeScript.