feat: support wait sink node close

[Yisaer]

No description provided.

[codecov]

Codecov Report

Attention: Patch coverage is 73.52941% with 9 lines in your changes missing coverage. Please review.

Project coverage is 63.39%. Comparing base (bfbb96d) to head (ec722ba).
Report is 1 commits behind head on master-1.14.

Files with missing lines	Patch %	Lines
internal/topo/node/sink_node.go	77.78%	4 Missing and 2 partials ⚠️
internal/topo/topo.go	50.00%	2 Missing and 1 partial ⚠️

Additional details and impacted files

@@               Coverage Diff               @@
##           master-1.14    #3373      +/-   ##
===============================================
+ Coverage        63.37%   63.39%   +0.01%     
===============================================
  Files              354      354              
  Lines            40740    40772      +32     
===============================================
+ Hits             25818    25844      +26     
  Misses           12672    12672              
- Partials          2250     2256       +6     

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