Checker skips static block bodies in class expressions #3628

const C = class {
    static { const n: number = 'wrong'; }
};

SharpTS at 72455db66 accepts this with --no-tsconfig --strict --noEmit. TypeScript 6.0.3 reports TS2322 with --ignoreConfig --strict --target ES2022 --noEmit.

The checker should type-check the statements in a class expression's static block. Class declaration static block bodies already go through CheckClassStaticBlocks. Found while working on #3621.