[ISSUE #8261]Avoid unnecessary waiting when a response is successfully returned

[3424672656]

Which Issue(s) This PR Fixes

Fixes #8261

Brief Description

How Did You Test This Change?

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 0% with 5 lines in your changes missing coverage. Please review.

Project coverage is 42.80%. Comparing base (3ecc73b) to head (4d29bb1).

Files	Patch %	Lines
...mq/client/impl/producer/DefaultMQProducerImpl.java	0.00%	3 Missing :warning:
...ocketmq/client/producer/RequestResponseFuture.java	0.00%	2 Missing :warning:

Additional details and impacted files

@@              Coverage Diff              @@
##             develop    #8272      +/-   ##
=============================================
- Coverage      42.88%   42.80%   -0.08%     
+ Complexity     10396    10380      -16     
=============================================
  Files           1274     1274              
  Lines          88956    88961       +5     
  Branches       11438    11438              
=============================================
- Hits           38151    38083      -68     
- Misses         46102    46168      +66     
- Partials        4703     4710       +7     

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[GenerousMan]

LGTM, but would it be better to add countDown in this piece of code?

public void setSendRequestOk(boolean sendRequestOk) {
    this.sendRequestOk = sendRequestOk;
}

[3424672656]

countDownLGTM，但是添加代码会更好吗？

public void setSendRequestOk(boolean sendRequestOk) {
    this.sendRequestOk = sendRequestOk;
}

But exception callbacks are also used