bug: No implicit casts for infix operators

This breaks due to `vec2f / u32` operation 
```ts
const gameSizeUniform = root.createUniform(d.u32, gameSize);

const randomInit = root['~unstable'].createGuardedComputePipeline((x, y) => {
  'use gpu';
  randf.seed2(d.vec2f(x, y).div(gameSizeUniform.$));
  ...
});
```