Prevent "Location Found" Notification
Using an app such as Automate, one can write a very simple flow which waits for notifications from com.android.systemui with the text of Location found and then cancel the notification as soon as it exists.

This works okay.  The flow doesn't use any CPU time until a notification shows up and then the flow is very quick (3 ms execution time).  However, the notification still appears for a brief moment.  My point is that this solution is like putting a net at the bottom of a cliff when a fence at the top would work much better.