This commit contains the changes for the following:

1. Patch prefs handler doesn't add the remote routes to pref if the pref update is also turning appconnector off.
2. Unadvertise routes when StoreRoutes is on but appConnector is turning off.
3. When appConnector is turning on, add a task to recreate and reload routeInfo from store to the queue
3. When shouldStore is changed, remove the state saved for routeInfo (Set to nil)

appc/appctest/appctest.go

@@ -8,6 +8,7 @@ import (
 	"slices"
 
 	"tailscale.com/appc/routeinfo"
+	"tailscale.com/ipn"
 )
 
 // RouteCollector is a test helper that collects the list of routes advertised
@@ -42,7 +43,7 @@ func (rc *RouteCollector) StoreRouteInfo(ri *routeinfo.RouteInfo) error {
 
 func (rc *RouteCollector) ReadRouteInfo() (*routeinfo.RouteInfo, error) {
 	if rc.routeInfo == nil {
-		return routeinfo.NewRouteInfo(), nil
+		return nil, ipn.ErrStateNotExist
 	}
 	return rc.routeInfo, nil
 }