Sort nodes by id before saving

[bonlime]

Reopening this PR: comfyanonymous/ComfyUI#4052

Currently after even a minor modification of the workflow, it's saved in random order. This fix ensures that the nodes are sorted, which minimises the GIT diff after modification. And in general makes sense, given the fact that links are already sorted

[huchenlei]

There is another place where we are saving the workflow:

ComfyUI_frontend/src/scripts/app.ts

Lines 1923 to 1929 in 9961be1

	setInterval(() => {
	const workflow = JSON.stringify(this.graph.serialize());
	localStorage.setItem("workflow", workflow);
	if (api.clientId) {
	sessionStorage.setItem(`workflow:${api.clientId}`, workflow);
	}
	}, 1000);

I feel like this should be implemented in litegraph instead of in the ComfyUI.

[huchenlei]

Done in #161 with test

[christian-byrne]

This can be updated now too:

ComfyUI_frontend/src/scripts/changeTracker.ts

Lines 245 to 262 in d0030e1

	static graphEqual(a, b, path = "") {
	if (a === b) return true;
	if (typeof a == "object" && a && typeof b == "object" && b) {
	const keys = Object.getOwnPropertyNames(a);
	if (keys.length != Object.getOwnPropertyNames(b).length) {
	return false;
	}
	for (const key of keys) {
	let av = a[key];
	let bv = b[key];
	if (!path && key === "nodes") {
	// Nodes need to be sorted as the order changes when selecting nodes
	av = [...av].sort((a, b) => a.id - b.id);
	bv = [...bv].sort((a, b) => a.id - b.id);
	} else if (path === "extra.ds") {

[bonlime]

Thanks for a quick implementation!