Const enum initializers reject numeric const variable references #3620

const source = 4;
const enum E { A = source, B }
console.log(E.B);

TypeScript 6.0.3 accepts this with --ignoreConfig --strict --target ES2022 --noEmit. Its emitted JavaScript prints 5. SharpTS with --no-tsconfig --strict --noEmit reports Expression type 'Variable' is not allowed in const enum initializer.

#3604 tracks the ordinary enum case. This case also needs the const enum's compile-time values in the interpreter and compiler.