Rerunning package create with --max-package-size leaves old files around

[Racer159]

Environment

Device and OS: Framework 16 - Ubuntu 24.04
App version: v0.43.1
Kubernetes distro being used: K3d
Other:

Steps to reproduce

1. For a Zarf package with a size >10MB run the following:

zarf package create . --max-package-size=10
zarf package create . --max-package-size=1

Expected result

A split Zarf package is made with only 1MB files

Actual Result

A split Zarf package is made where the first few are 10MB and the next few are 1MB

Visual Proof (screenshots, videos, text, etc)

Severity/Priority

Medium (the workaround is to delete all of the Zarf parts before recreate)

Additional Context

None