"No versions with compatible signature" message not always visible

• Device OS and version: Oxygen OS 11.0.10.10.IN11AA
• Device model/manufacturer: OnePlus 8 Pro (IN2025)
• F-Droid version (in the About screen): 1.13.1
• F-Droid privileged extension version (if installed): Not installed

What did you do? (clear steps if possible)

1. Install Termux from the Google Play store
2. Open the Termux page in f-droid

What did you expect to see?

I expected to see the versions available on f-droid:

I also expected to see a warning/banner that the app is installed from the Play Store, and that I will need to uninstall it and re-install through f-droid to get the newest version.

What did you see instead?

A regular f-droid page that thinks the latest version of the app is already installed.

Basically, it needs some indication that the app is from a different app store, and needs to be reinstalled through f-droid to update it. Currently f-droid makes it look like the app is completely up to date which is wrong.