This is a Unity editor extension that adds web browser-style Back and Forward items to the Edit > Selection menu. These allow you to quickly re-select the game object or asset that you previously had selected.
Add the package to your project via UPM using the Git URL https://github.com/mminer/selection-history-navigator.git. You can also clone the repository and point UPM to your local copy.
After clicking on a few game objects or assets, press command [ (macOS) or ctrl [ (Windows) to return to the previous selection.
After navigating backward, you can also navigate forward with command ] (macOS) or ctrl ] (Windows).