bug: GLSL aliases evaluate comptime index multiple times

let calls = 0;
const nextIndex = tgpu.comptime(() => calls++);

const fn = () => {
  'use gpu';

  const values = d.arrayOf(d.vec2i, 3)([
    d.vec2i(10, 11),
    d.vec2i(20, 21),
    d.vec2i(30, 31),
  ]);

  const value = values[nextIndex()]!;
  return value.x;
};

tgpu.resolve([fn], glOptions());

nextIndex() is called once so the generated function should return values[0].x

the generated function returns values[2].x

_constStatement already evaluates the RHS, then GlslGenerator._aliasConstStatement evaluates the index again in #hoistIndexAccesses, followed by another evaluation of the whole access expression

Start by tracing the shown example through _constStatement, then GlslGenerator._aliasConstStatement and #hoistIndexAccesses. Reproduce the snippet and verify that nextIndex() is evaluated once and the generated function returns values[0].x rather than values[2].x.