[Bug] customized Diff-Algorithm, needed for diff-editor

[Hideer]

Reproducible in vscode.dev or in VS Code Desktop?

• Not reproducible in vscode.dev or VS Code Desktop

Reproducible in the monaco editor playground?

• Not reproducible in the monaco editor playground

Monaco Editor Playground Link

demo

Cannot be used in the latest version, how to solve it

Monaco Editor Playground Code

const WorkerBasedDocumentDiffProvider = require('vs/editor/browser/widget/diffEditor/workerBasedDocumentDiffProvider').WorkerBasedDocumentDiffProvider;

class MyDiffProviderFactoryService {
	createDiffProvider(editor, options) {
		console.log('compute diff');
		const provider = standaloneServices.StandaloneServices.initialize().createInstance(WorkerBasedDocumentDiffProvider, {});

		return {
			onDidChange: () => {},
			async computeDiff(original, modified, options, token) {
				const d = await provider.computeDiff(original, modified, options, token);
				return {
					changes: d.changes.slice(1),
					moves: [],
					identical: false,
					quitEarly: false,
				};
			}
		}
	}
}

const standaloneServices = require("vs/editor/standalone/browser/standaloneServices");

standaloneServices.StandaloneServices.initialize({
	'diffProviderFactoryService': new MyDiffProviderFactoryService(),
});

const m1 = monaco.editor.createModel(`
1
2
3
4
5
6
7
8
9`);

const m2 = monaco.editor.createModel(`
1
2
x
4
5
6
8
9`);

const diffEditor = monaco.editor.createDiffEditor(document.getElementById('container'), {});
console.log('1');
diffEditor.setModel({
	original: m1,
	modified: m2,
});

Reproduction Steps

1. Use the above code or demo
2. Update monaco version to 0.49

Actual (Problematic) Behavior

No response

Expected Behavior

No response

Additional Context

No response