GIF loading problem solution proposal

[Cybertwip]

Describe the bug
Looks like fastgif doesn't decode properly some gifs.

Try to load this gif:

https://gifimage.net/wp-content/uploads/2017/08/sonic-running-gif-6.gif

Something like

import { parseGIF, decompressFrames } from 'gifuct-js'

tempCtx.clearRect(0, 0, tempCanvas.width, tempCanvas.height);

var dims = frame.dims
var frameImageData = tempCtx.createImageData(dims.width, dims.height)
frameImageData.data.set(frame.patch)
tempCtx.putImageData(frameImageData, dims.left, dims.top)

Might solve it.

To Reproduce
Steps to reproduce the behavior:

1. Just try to load transparent gifs.