[Bug] Send trace data fail because context.cancel() early

[lifepuzzlefun]

BUG REPORT

1. Please describe the issue you observed:

master code.
local cluster.
example/producer/trace/main.go

2. Please tell us about your environment:

3. Other information (e.g. detailed explanation, logs, related issues, suggestions on how to fix, etc):

see master code

rocketmq-client-go/internal/trace.go

Lines 460 to 482 in 782b09c

	var req = td.buildSendRequest(mq, msg)
	ctx, cancel := context.WithTimeout(context.Background(), 5*time.Second)
	defer cancel()
	err := td.cli.InvokeAsync(ctx, addr, req, func(command *remote.RemotingCommand, e error) {
	resp := primitive.NewSendResult()
	if e != nil {
	rlog.Info("send trace data error.", map[string]interface{}{
	"traceData": data,
	})
	} else {
	td.cli.ProcessSendResponse(mq.BrokerName, command, resp, msg)
	rlog.Debug("send trace data success:", map[string]interface{}{
	"SendResult": resp,
	"traceData": data,
	})
	}
	})
	if err != nil {
	rlog.Info("send trace data error when invoke", map[string]interface{}{
	rlog.LogKeyUnderlayError: err,
	})
	}
	}

[stale]

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