Invalidate session when relay is out of tolerance

Added logic to invalidate the session with code 90 if the relay's session block height is not within the node's tolerance. This prevents the relay from being processed further and stops new relays from being initiated, ensuring that notifications are accurate and timely.

app/cmd/rpc/mesh/relay.go

@@ -140,6 +140,11 @@ func notifyServicer(r *pocketTypes.Relay) {
 
 	// Safety measure to not ask for an app session within range
 	if !ns.ServicerNode.Node.CanHandleRelayWithinTolerance(r.Proof.SessionBlockHeight) {
+		// invalidate session with code 90
+		ns.IsValid = false
+		ns.Error = NewSdkErrorFromPocketSdkError(pocketTypes.NewSealedEvidenceError(ModuleName))
+		// here we are late to notify servicer about the work done, so this session needs to be invalidated, to avoid
+		// new relays and prevent all the code till here on notify
 		LogRelay(r, fmt.Sprintf(
 			"notify - unable to delivery because relay session height is not within tolerance of fullNode session_height=%d",
 			ns.ServicerNode.Node.GetLatestSessionBlockHeight(),