fix: stop overwriting client_traffics.enable with JSON enable in GetClientTrafficByEmail (#3931)

When a client hit traffic/expiry limit, disableInvalidClients sets
client_traffics.enable=false and removes the user from Xray. GetClientTrafficByEmail
was overwriting that with settings.clients[].enable (admin config), so
ResetClientTraffic never saw the client as disabled and did not re-add
the user. Clients could not connect until manually disabled/re-enabled.
Now the DB runtime enable flag is preserved; reset correctly re-adds
the user to Xray.

web/service/inbound.go

@@ -2032,7 +2032,6 @@ func (s *InboundService) GetClientTrafficByEmail(email string) (traffic *xray.Cl
 		return nil, err
 	}
 	if t != nil && client != nil {
-		t.Enable = client.Enable
 		t.UUID = client.ID
 		t.SubId = client.SubID
 		return t, nil