[backport core/1.32] Expose LGraphNode.getSlotPosition (#7057)

Backport of #7042 to `core/1.32`

Automatically created by backport workflow.

┆Issue is synchronized with this [Notion
page](https://www.notion.so/PR-7057-backport-core-1-32-Expose-LGraphNode-getSlotPosition-2bb6d73d365081bc86e5c4e7a13503e3)
by [Unito](https://www.unito.io)

Co-authored-by: niknah <niknah+github@gmail.com>

Author: comfy-pr-bot

src/lib/litegraph/src/LGraphNode.ts

@@ -2,7 +2,8 @@ import { LGraphNodeProperties } from '@/lib/litegraph/src/LGraphNodeProperties'
 import {
   calculateInputSlotPos,
   calculateInputSlotPosFromSlot,
-  calculateOutputSlotPos
+  calculateOutputSlotPos,
+  getSlotPosition
 } from '@/renderer/core/canvas/litegraph/slotCalculations'
 import type { SlotPositionContext } from '@/renderer/core/canvas/litegraph/slotCalculations'
 import { useLayoutMutations } from '@/renderer/core/layout/operations/layoutMutations'
@@ -3340,6 +3341,16 @@ export class LGraphNode
     )
   }
 
+  /**
+   * Get slot position using layout tree if available, fallback to node's position * Unified implementation used by both LitegraphLinkAdapter and useLinkLayoutSync
+   * @param slotIndex The slot index
+   * @param isInput Whether this is an input slot
+   * @returns Position of the slot center in graph coordinates
+   */
+  getSlotPosition(slotIndex: number, isInput: boolean): Point {
+    return getSlotPosition(this, slotIndex, isInput)
+  }
+
   /** @inheritdoc */
   snapToGrid(snapTo: number): boolean {
     return this.pinned ? false : snapPoint(this.pos, snapTo)