Revert "[bugfix] Fix TypeScript error in Rectangle.ts - remove invalid generic type parameter"

This reverts commit afe1c8cffa4963a752b3bba64a00e9d318ba9f35.

src/lib/litegraph/src/infrastructure/Rectangle.ts

@@ -65,7 +65,10 @@ export class Rectangle extends Float64Array {
       : new Rectangle(rect[0], rect[1], rect[2], rect[3])
   }
 
-  override subarray(begin: number = 0, end?: number): Float64Array {
+  override subarray(
+    begin: number = 0,
+    end?: number
+  ): Float64Array<ArrayBuffer> {
     const byteOffset = begin << 3
     const length = end === undefined ? end : end - begin
     return new Float64Array(this.buffer, byteOffset, length)