fix #16542

[ringabout]

No description provided.

[ringabout]

After this PR, hash(float) works both in JS and VM backend.

Notes that hash(float) never worked in JS backend. So I won't fix it in this PR. bigInt PR needs to be merged first.

• In the next PR make a workaround for platforms doesn't support BigUint64Array

const buffer = new ArrayBuffer(8);
const floatBuffer = new Float64Array(buffer);
const uintBuffer = new Uint32Array(buffer);
floatBuffer[0] = x_503316698;
result_503316699 = uintBuffer[1];

see https://bugs.webkit.org/show_bug.cgi?id=190800

[timotheecour]

excellent

[timotheecour]

weak test, doesn't check that
hash(x) == static(hash(x)) in this branch