GuiX Studio uses the Azure-RTOS GUIX repo, rather than the Eclipse-ThreadX repository

[WitekioPhil]

Describe the bug
When running GuiX Studio for the first time, you are prompted to download (clone) the GUIX repository. If the user chooses to clone, the old azure-rtos/guix repo is used, rather than this newer eclipse-threadx repo.

Please also mention any information which could help others to understand
the problem you're facing:

• What target device are you using?
  Irrelevant, just run GuiX.
• Which version of Eclipse ThreadX?
  Tested using version 6.4.0 of GuiX Studio.
• What toolchain and environment?
  Windows 11
• What have you tried to diagnose or workaround this issue?
  Nothing.

To Reproduce
Steps to reproduce the behavior:

1. Download and run GuiX Studio using the link in the README (https://aka.ms/azrtos-guix-installer)
2. Choose to clone the GUIX repo
3. Note that the wrong repo is used: azure-rtos/guix.git. It should be this repo: eclipse-threadx/guix.git
   

Expected behavior
Samples should be downloaded from this repo, rather than the old azure-rtos repo.

Impact
Uncertain - potentially large if samples differ.

Logs and console output
N/A

Additional context
N/A

[WitekioPhil]

This is fixed, and in the 6.4.1 release. However, the latest version on the Microsoft Store is still 6.4.0, which uses the old repo.