signalmeow/web: reset request time when retrying requests

When a websocket stops responding, the pending request is retried after the
connection is torn down, but it kept the original request time and was
therefore rejected as too old by the new connection's write loop.

Stamp each attempt with its own request time.

pkg/signalmeow/web/signalwebsocket.go

@@ -657,7 +657,7 @@ func (s *SignalWebsocket) sendRequestInternal(
 			}
 		}
 		zerolog.Ctx(ctx).Warn().Int("retry_count", retryCount).Msg("Received nil response, retrying recursively")
-		return s.sendRequestInternal(ctx, request, startTime, retryCount+1)
+		return s.sendRequestInternal(ctx, request, time.Now(), retryCount+1)
 	}
 	return response, nil
 }