Windows Installer update with "keep current options" uninstalled the free-threaded binaries

[TBBle]

Bug report

Bug description:

I used the installer to upgrade from a Python 3.13.0rc1 install to a Python 3.13.0rc2 install. In the 3.13.0rc1 install, I had installed the free-threaded binaries.

When upgrading, I chose the first option, "Upgrade Now".

After the upgrade, the free-threaded binaries were no longer installed, and I had to rerun the installer and modify the install to add them.

Other non-default install options, such as installing the debug binaries, were not lost.

CPython versions tested on:

3.13

Operating systems tested on:

Windows

Linked PRs

• gh-124254: Detect freethreaded MSI component when doing an upgrade on Windows #124279
• [3.13] gh-124254: Detect freethreaded MSI component when doing an upgrade on Windows (GH-124279) #124347

[zooba]

Yeah, looks like it was missed from the list of features in the bootstrapper. It should only need to be added there.

We can fix it in 3.13.1. Anyone upgrading from RC will lose the setting, but that's okay. It's installed properly by 3.13.0 and so updates after that will be fine.

[itamaro]

@zooba, with gh-124279 (+backport) merged, is there anything left to do here?
closing the issue, but please re-open if there's more left to do!