src/vs/editor/common/config/editorOptions.ts/EditorLineHeight/compute
class EditorLineHeight:	public override compute(env: IEnvironmentalOptions, options: IComputedEditorOptions, value: number): number {
		// The lineHeight is computed from the fontSize if it is 0.
		// Moreover, the final lineHeight respects the editor zoom level.
		// So take the result from env.fontInfo
		return env.fontInfo.lineHeight;
	}