bugfix: fix return of Commit and Rollback

[luweiqianyi]

commit or rollback success,but ctx error happens, should not return "failed"

What this PR does: commit or rollback success,but ctx error happens

Which issue(s) this PR fixes:

Fixes #

Special notes for your reviewer:

Does this PR introduce a user-facing change?: yes

SendSyncRequest success,  ctx error happens, should not return  "send global commit request failed ..." or "GlobalRollbackRequest rollback failed ..."

[codecov-commenter]

Codecov Report

Merging #595 (838dc68) into master (5ecf43a) will not change coverage.
The diff coverage is 100.00%.

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@@           Coverage Diff           @@
##           master     #595   +/-   ##
=======================================
  Coverage   37.08%   37.08%           
=======================================
  Files         172      172           
  Lines       11616    11616           
=======================================
  Hits         4308     4308           
  Misses       6944     6944           
  Partials      364      364           

Files Changed	Coverage Δ
pkg/tm/global_transaction.go	100.00% <100.00%> (ø)

[iSuperCoder]

@luweiqianyi 展开描述下这个问题的复现步骤和实际影响？

[Issues-translate-bot]

RoBot detected the issue body's language is not English, translate it automatically. 👯👭🏻🧑‍🤝‍🧑👫🧑🏿‍🤝‍🧑🏻👩🏾‍🤝‍👨🏿👬🏿

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@luweiqianyi Expand and describe the reproduction steps and actual impact of this problem?

[Issues-translate-bot]

RoBot detected the issue body's language is not English, translate it automatically. 👯👭🏻🧑‍🤝‍🧑👫🧑🏿‍🤝‍🧑🏻👩🏾‍🤝‍👨🏿👬🏿

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@luweiqianyi expand and describe the reproduction steps and actual impact of this problem?

I used the main method of the file in this link "https://github.com/seata/seata-go-samples/blob/main/tcc/local/cmd/local.go" as the test script, and passed it to tm.WithGlobalTx a ctx, cancel := context.WithTimeout(context.Background(), time.Second*5) ctx, and simulated "Successful submission, but ct x error”, for the Commit function, submitting the global commit request is indeed successful, at this time err=nil, but the original code before modification will return send global commit request failed, is it unreasonable, and Rollback also has the same problem

[luweiqianyi]

@luweiqianyi 展开描述下这个问题的复现步骤和实际影响？

我就以这个链接“https://github.com/seata/seata-go-samples/blob/main/tcc/local/cmd/local.go”的文件的main方法为测试脚本了，传给tm.WithGlobalTx一个ctx, cancel := context.WithTimeout(context.Background(), time.Second*5)的ctx，并且通过打断点调试的方式来模拟 “提交成功、但是ctx error”的情况，对于Commit函数来说，提交全局commit请求确实成功了，此时err=nil，但是修改前的原代码是会日志输出 send global commit request failed, 是不是不太合理， 同理Rollback也有相同的问题

@iSuperCoder

[Issues-translate-bot]

RoBot detected the issue body's language is not English, translate it automatically. 👯👭🏻🧑‍🤝‍🧑👫🧑🏿‍🤝‍🧑🏻👩🏾‍🤝‍👨🏿👬🏿

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@luweiqianyi Expand and describe the reproduction steps and actual impact of this problem?

I used the main method of the file in this link "[https://github.com/seata/seata-go-samples/blob/main/tcc/local/cmd/local.go" as the test script, and passed a ctx to tm.WithGlobalTx](https://github.com/seata/seata-go-samples/blob/main/tcc/local/cmd/local.go%E2%80%9D%E7%9 A%84%E6%96%87%E4%BB%B6%E7%9A%84main%E6%96%B9%E6%B3%95%E4%B8%BA%E6%B5%8B%E8%AF%95%E8%84%9A%E6%9C%AC%E4%BA%86%EF%BC%8C%E4%BC%A0%E7%BB%99t m.WithGlobalTx%E4%B8%80%E4%B8%AActx), cancel := ctx of context.WithTimeout(context.Background(), time.Second*5), and simulate the situation of "commit successfully, but ctx error" by breaking point debugging. For the Commit function, submitting the global commit request is indeed successful. At this time, err=nil, but the original code before modification will be Return send global commit request failed, is it unreasonable? Similarly, Rollback has the same problem

@iSuperCoder

[iSuperCoder]

这个修改应该不太对，建议业务调用方设置合理的超时时间。
如果是bf.Ongoing()调用时ctx超时，全局事务提交的请求就不会发送出去，此时err也不为nil。按照你修改后的判断逻辑，将会打印success的日志，明显是不对的。

[funky-eyes]

LGTM