GNOME desktop search providers disabled by default

[samcday]

Describe the bug
The Contacts + Calculator + Calendar + Weather search providers in Settings -> Search -> Search Results are disabled by default in Silverblue.

To Reproduce
Please describe the steps needed to reproduce the bug:

1. Do a Silverblue
2. Ask Silverblue a math question (<Super> 1+1)
3. Receive no math answer. Compute math results with pen+paper like some kind of brutish luddite.

Expected behavior
I confirmed that Workstation 40 has these providers enabled by default in the Live ISO. Well, Contacts+Calc+Calendar at least (weather was disabled in live ISO).

OS version: 40

[chrisawi]

Flatpak disables GNOME Shell search providers when exporting them for privacy/security, otherwise an app could grant itself access to overview keystrokes without the user's knowledge.

Maybe this is something that could be tacked onto the proposed /etc/flatpak/preinstall.d mechanism: flatpak/flatpak#5579