Update litegraph.d.ts
Update litegraph.d.ts

Fix type definitions:
- LiteGraph.active_graph
- LGraphCanvas.getNodeTypesInCategory
- LGraphCanvas.getNodeTypesCategories
jagenjo/litegraph.js,jagenjo/litegraph.js,jagenjo/litegraph.js,jagenjo/litegraph.js,jagenjo/litegraph.js