graceful close duplicate incoming notification stream

[turuslan]

Referenced issues

• Hybrid network of kagome-substrate peers lags with finalization #1218

Description of the Change

Sometimes polkadot duplicates streams.
Graceful close incoming streams instead of reset (which interrupts reading).

Benefits

Don't miss incoming messages.

Possible Drawbacks

Usage Examples or Tests

Alternate Designs

[codecov]

Codecov Report

Merging #1350 (2dd6dbe) into master (60e9e2d) will increase coverage by 0.00%.
The diff coverage is 0.00%.

@@           Coverage Diff           @@
##           master    #1350   +/-   ##
=======================================
  Coverage   24.39%   24.39%           
=======================================
  Files         619      619           
  Lines       23036    23038    +2     
  Branches    12019    12021    +2     
=======================================
+ Hits         5619     5621    +2     
+ Misses      12229    12228    -1     
- Partials     5188     5189    +1     

Impacted Files	Coverage Δ
core/network/impl/stream_engine.hpp	23.26% <0.00%> (-0.24%)	⬇️
core/api/transport/impl/ws/ws_listener_impl.cpp	43.05% <0.00%> (+2.77%)	⬆️

📣 We’re building smart automated test selection to slash your CI/CD build times. Learn more