fix: avoid flush when kbinterrupt

[JoanFM]

Related to #2352 and #2343

[codecov]

Codecov Report

Merging #2353 (d991a24) into master (f4d0893) will increase coverage by 2.49%.
The diff coverage is 70.00%.

@@            Coverage Diff             @@
##           master    #2353      +/-   ##
==========================================
+ Coverage   88.35%   90.84%   +2.49%     
==========================================
  Files         223      223              
  Lines       12021    12026       +5     
==========================================
+ Hits        10621    10925     +304     
+ Misses       1400     1101     -299     

Flag	Coverage Δ
daemon	50.78% <50.00%> (-0.02%)	⬇️
jina	91.00% <70.00%> (+2.61%)	⬆️

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
jina/peapods/runtimes/zmq/zed.py	91.39% <40.00%> (-1.81%)	⬇️
jina/peapods/zmq/__init__.py	79.82% <100.00%> (+0.65%)	⬆️
jina/enums.py	96.00% <0.00%> (+0.57%)	⬆️
jina/executors/compound.py	83.16% <0.00%> (+1.98%)	⬆️
jina/jaml/helper.py	93.89% <0.00%> (+2.29%)	⬆️
jina/drivers/control.py	89.41% <0.00%> (+2.35%)	⬆️
jina/jaml/__init__.py	96.37% <0.00%> (+4.14%)	⬆️
jina/types/request/__init__.py	99.23% <0.00%> (+6.15%)	⬆️
jina/parsers/helper.py	42.38% <0.00%> (+6.62%)	⬆️
... and 18 more

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[github-actions]

Latency summary

Current PR yields:

• 😶 index QPS at 1028, delta to last 3 avg.: +0%
• 😶 query QPS at 15, delta to last 3 avg.: -2%

Breakdown

Version	Index QPS	Query QPS
current	1028	15
1.1.10	1039	15
1.1.9	1018	15

Backed by latency-tracking. Further commits will update this comment.

[nan-wang]

LGTM👍