Fix context menu creating nodes in wrong position (#5595)

* Fix context menu creating nodes in wrong position

When nodes are created from the context menu, they previously had there
position set immediately after the node itself was created. Under some
circumstances, this new position would be overwritten by the layout
store.

This is solved by setting the position before node initialization.

* nit: Move size fix to named variable

Also remove ternary. The elements are always numberic, so checking if a
number is truthy before multiplying by 0 is a little silly.

* nit: Further variable extraction

src/lib/litegraph/src/LGraphCanvas.ts

@@ -6314,7 +6314,14 @@ export class LGraphCanvas
         }
 
         // that.graph.beforeChange();
-        const newNode = LiteGraph.createNode(nodeNewType)
+        const xSizeFix = opts.posSizeFix[0] * LiteGraph.NODE_WIDTH
+        const ySizeFix = opts.posSizeFix[1] * LiteGraph.NODE_SLOT_HEIGHT
+        const nodeX = opts.position[0] + opts.posAdd[0] + xSizeFix
+        const nodeY = opts.position[1] + opts.posAdd[1] + ySizeFix
+        const pos = [nodeX, nodeY]
+        const newNode = LiteGraph.createNode(nodeNewType, nodeNewOpts.title, {
+          pos
+        })
         if (newNode) {
           // if is object pass options
           if (nodeNewOpts) {
@@ -6341,9 +6348,6 @@ export class LGraphCanvas
                 )
               }
             }
-            if (nodeNewOpts.title) {
-              newNode.title = nodeNewOpts.title
-            }
             if (nodeNewOpts.json) {
               newNode.configure(nodeNewOpts.json)
             }
@@ -6353,14 +6357,6 @@ export class LGraphCanvas
           if (!this.graph) throw new NullGraphError()
 
           this.graph.add(newNode)
-          newNode.pos = [
-            opts.position[0] +
-              opts.posAdd[0] +
-              (opts.posSizeFix[0] ? opts.posSizeFix[0] * newNode.size[0] : 0),
-            opts.position[1] +
-              opts.posAdd[1] +
-              (opts.posSizeFix[1] ? opts.posSizeFix[1] * newNode.size[1] : 0)
-          ]
 
           // Interim API - allow the link connection to be canceled.
           // TODO: https://github.com/Comfy-Org/litegraph.js/issues/946