Graphical option with ImageData doesn't work in WebWorker

## Issue
Graphical option with ImageData doesn't work in WebWorker but when I use `{mode: 'cpu'}` it works.

## Env
Google Chrome
FireFox

Windows 11 22H2
i7 8565U
UHD Graphics 620

Windows 11 22H2
i7 1255U
Intel Iris Xe Graphics

## Code
```javascript
// doesn't work
const gpu = new GPU();
const graphicalTest = gpu.createKernel(function(data) {
const [r, g, b, a] = data[this.thread.y][this.thread.x];
this.color(r, g, b, a);
}, {
output: [width, height],
graphical: true,
});
graphicalTest(imageData/* ImageData Object */);
const newImageData = new ImageData(Uint8ClampedArray.from(graphicalTest.getPixels()), this.#width, this.#height);
// > gpu-browser.min.js:28 Uncaught (in promise) Error: Error compiling fragment shader: ERROR: 0:465: 'color' : no matching overloaded function found

// works
const gpu = new GPU({mode: 'cpu'});
const graphicalTest = gpu.createKernel(function(data) {
const [r, g, b, a] = data[this.thread.y][this.thread.x];
this.color(r, g, b, a);
}, {
output: [width, height],
graphical: true,
});
graphicalTest(imageData/* ImageData Object */);
const newImageData = new ImageData(Uint8ClampedArray.from(graphicalTest.getPixels()), this.#width, this.#height);

// doesn't work
const gpu = new GPU();
const graphicalTest = gpu.createKernel(function(data) {
const [r, g, b, a] = data[this.thread.y][this.thread.x];
const sum = r + g + b + a;
this.color(r, g, b, a);
}, {
output: [width, height],
graphical: true,
});
graphicalTest(imageData/* ImageData Object */);
const newImageData = new ImageData(Uint8ClampedArray.from(graphicalTest.getPixels()), this.#width, this.#height);
// > Uncaught (in promise) Error: Unhandled binary expression between Number & Array(4) on line 2, position 3:]

// works
const gpu = new GPU({mode: 'cpu'});
const graphicalTest = gpu.createKernel(function(data) {
const [r, g, b, a] = data[this.thread.y][this.thread.x];
const sum = r + g + b + a;
this.color(r, g, b, a);
}, {
output: [width, height],
graphical: true,
});
graphicalTest(imageData/* ImageData Object */);
const newImageData = new ImageData(Uint8ClampedArray.from(graphicalTest.getPixels()), this.#width, this.#height);

```