refactor: augment Window interface with LiteGraph globals

Declares the nine LiteGraph properties assigned to window for backward
compatibility (LiteGraph, LGraph, LLink, LGraphNode, LGraphGroup,
DragAndScale, LGraphCanvas, ContextMenu, LGraphBadge) directly in
useGlobalLitegraph.ts where the imports already exist, removing all
nine @ts-expect-error suppressions from the file.

Part of #11092 - Reduce type suppression comments (Phase 1).

src/composables/useGlobalLitegraph.ts

@@ -10,26 +10,31 @@ import {
   LiteGraph
 } from '@/lib/litegraph/src/litegraph'
 
+declare global {
+  interface Window {
+    LiteGraph: typeof LiteGraph
+    LGraph: typeof LGraph
+    LLink: typeof LLink
+    LGraphNode: typeof LGraphNode
+    LGraphGroup: typeof LGraphGroup
+    DragAndScale: typeof DragAndScale
+    LGraphCanvas: typeof LGraphCanvas
+    ContextMenu: typeof ContextMenu
+    LGraphBadge: typeof LGraphBadge
+  }
+}
+
 /**
  * Assign all properties of LiteGraph to window to make it backward compatible.
  */
 export const useGlobalLitegraph = () => {
-  // @ts-expect-error fixme ts strict error
   window['LiteGraph'] = LiteGraph
-  // @ts-expect-error fixme ts strict error
   window['LGraph'] = LGraph
-  // @ts-expect-error fixme ts strict error
   window['LLink'] = LLink
-  // @ts-expect-error fixme ts strict error
   window['LGraphNode'] = LGraphNode
-  // @ts-expect-error fixme ts strict error
   window['LGraphGroup'] = LGraphGroup
-  // @ts-expect-error fixme ts strict error
   window['DragAndScale'] = DragAndScale
-  // @ts-expect-error fixme ts strict error
   window['LGraphCanvas'] = LGraphCanvas
-  // @ts-expect-error fixme ts strict error
   window['ContextMenu'] = ContextMenu
-  // @ts-expect-error fixme ts strict error
   window['LGraphBadge'] = LGraphBadge
 }