[#11256] Fix stream leak of FlowControl

[emeroad]

No description provided.

[codecov]

Codecov Report

Attention: Patch coverage is 29.62963% with 19 lines in your changes missing coverage. Please review.

Project coverage is 36.91%. Comparing base (b2f3b26) to head (9d43fa0).

Files	Patch %	Lines
...lowcontrol/FlowControlRejectExecutionListener.java	38.09%	11 Missing and 2 partials ⚠️
...r/flowcontrol/StreamExecutorServerInterceptor.java	0.00%	3 Missing ⚠️
...reamExecutorRejectedExecutionRequestScheduler.java	0.00%	2 Missing ⚠️
...c/server/flowcontrol/DefaultServerCallWrapper.java	0.00%	1 Missing ⚠️

Additional details and impacted files

@@             Coverage Diff              @@
##             master   #11305      +/-   ##
============================================
- Coverage     36.92%   36.91%   -0.01%     
+ Complexity    12076    12073       -3     
============================================
  Files          4011     4011              
  Lines         98288    98291       +3     
  Branches      10421    10424       +3     
============================================
- Hits          36289    36283       -6     
- Misses        59034    59040       +6     
- Partials       2965     2968       +3     

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