Add subgraph management keybinds (#6114)

Adds a new keybind to attempt to toggle the promotion state of the
currently hovered widget

Adds a keybind to open the subgraph configuration panel

Neither of these options are given a default binding.

Cleans up some incorrect version and icon information that was forgotten
about.

┆Issue is synchronized with this [Notion
page](https://www.notion.so/PR-6114-Add-subgraph-management-keybinds-28f6d73d365081e6b6f3c78f99afc094)
by [Unito](https://www.unito.io)

---------

Co-authored-by: Benjamin Lu <benceruleanlu@proton.me>

src/services/litegraphService.ts

@@ -845,7 +845,7 @@ export const useLitegraphService = () => {
         )
       }
       if (this.graph && !this.graph.isRootGraph) {
-        const [x, y] = canvas.canvas_mouse
+        const [x, y] = canvas.graph_mouse
         const overWidget = this.getWidgetOnPos(x, y, true)
         if (overWidget) {
           addWidgetPromotionOptions(options, overWidget, this)