Cleanup/Perf: Float32Array/Float64Array removal (#5877)

## Summary

Redoing https://github.com/Comfy-Org/ComfyUI_frontend/pull/5567, without
the link rendering changes.

## Changes

- **What**: Standardizing the Point/Size/Rect logic around numeric
tuples instead of typed arrays.

## Review Focus

Cutting here and going to continue in a second PR.

Do the simpler types make sense?
Do we want to keep the behavior of Rectangle as it is now?

┆Issue is synchronized with this [Notion
page](https://www.notion.so/PR-5877-WIP-Float32Array-Float64Array-removal-27f6d73d36508169a39eff1e4a87a61c)
by [Unito](https://www.unito.io)

---------

Co-authored-by: filtered <176114999+webfiltered@users.noreply.github.com>
Co-authored-by: github-actions <github-actions@github.com>

src/lib/litegraph/src/LGraphNode.ts

@@ -37,7 +37,6 @@ import type {
   ISlotType,
   Point,
   Positionable,
-  ReadOnlyPoint,
   ReadOnlyRect,
   Rect,
   Size
@@ -413,7 +412,7 @@ export class LGraphNode
   }
 
   /** @inheritdoc {@link renderArea} */
-  #renderArea: Float32Array = new Float32Array(4)
+  #renderArea = new Rectangle()
   /**
    * Rect describing the node area, including shadows and any protrusions.
    * Determines if the node is visible.  Calculated once at the start of every frame.
@@ -434,7 +433,7 @@ export class LGraphNode
   }
 
   /** The offset from {@link pos} to the top-left of {@link boundingRect}. */
-  get boundingOffset(): ReadOnlyPoint {
+  get boundingOffset(): Readonly<Point> {
     const {
       pos: [posX, posY],
       boundingRect: [bX, bY]
@@ -442,10 +441,10 @@ export class LGraphNode
     return [posX - bX, posY - bY]
   }
 
-  /** {@link pos} and {@link size} values are backed by this {@link Rect}. */
-  _posSize: Float32Array = new Float32Array(4)
-  _pos: Point = this._posSize.subarray(0, 2)
-  _size: Size = this._posSize.subarray(2, 4)
+  /** {@link pos} and {@link size} values are backed by this {@link Rectangle}. */
+  _posSize = new Rectangle()
+  _pos: Point = this._posSize.pos
+  _size: Size = this._posSize.size
 
   public get pos() {
     return this._pos
@@ -1653,7 +1652,7 @@ export class LGraphNode
       inputs ? inputs.filter((input) => !isWidgetInputSlot(input)).length : 1,
       outputs ? outputs.length : 1
     )
-    const size = out || new Float32Array([0, 0])
+    const size = out ?? [0, 0]
     rows = Math.max(rows, 1)
     // although it should be graphcanvas.inner_text_font size
     const font_size = LiteGraph.NODE_TEXT_SIZE
@@ -2004,13 +2003,13 @@ export class LGraphNode
 
   /**
    * returns the bounding of the object, used for rendering purposes
-   * @param out {Float32Array[4]?} [optional] a place to store the output, to free garbage
+   * @param out {Rect?} [optional] a place to store the output, to free garbage
    * @param includeExternal {boolean?} [optional] set to true to
    * include the shadow and connection points in the bounding calculation
    * @returns the bounding box in format of [topleft_cornerx, topleft_cornery, width, height]
    */
   getBounding(out?: Rect, includeExternal?: boolean): Rect {
-    out ||= new Float32Array(4)
+    out ||= [0, 0, 0, 0]
 
     const rect = includeExternal ? this.renderArea : this.boundingRect
     out[0] = rect[0]
@@ -3169,7 +3168,7 @@ export class LGraphNode
    * @returns the position
    */
   getConnectionPos(is_input: boolean, slot_number: number, out?: Point): Point {
-    out ||= new Float32Array(2)
+    out ||= [0, 0]
 
     const {
       pos: [nodeX, nodeY],