recreate the image does not re apply the script if one is provided

[hogoww]

Describe the bug
When recreating the image, it only redownload the image.
If a script is provided however, it is only applied the first time around, and not reset upon recreating it.

To Reproduce
1 Create a new image with a script.
2 Launch the image, the script is executed.
3 Quit.
4 Recreate the image using the menu
5 Launch the image : The script is not executed

Expected behavior
The script should be executed after recreating an image

Version information:
Ubuntu 20
Pharo 9
Pharo Launcher version: 2.2

Expected development cost
Should be fairly easy.
I'm assuming it's just a flag to reset.
I will probably look into it when I get time.

[demarey]

fixed by #542