Polish shm

[yellowhatter]

No description provided.

[kydos]

Looks good.

[codecov]

Codecov Report

Attention: Patch coverage is 29.91453% with 82 lines in your changes missing coverage. Please review.

Project coverage is 70.91%. Comparing base (ffbe455) to head (1a77fdc).
Report is 1 commits behind head on main.

Files with missing lines	Patch %	Lines
commons/zenoh-shm/src/api/provider/shm_provider.rs	23.07%	10 Missing ⚠️
commons/zenoh-sync/src/event.rs	28.57%	10 Missing ⚠️
commons/zenoh-shm/src/api/provider/types.rs	0.00%	8 Missing ⚠️
commons/zenoh-protocol/src/core/endpoint.rs	22.22%	7 Missing ⚠️
commons/zenoh-shm/src/api/buffer/zshm.rs	0.00%	6 Missing ⚠️
commons/zenoh-shm/src/api/buffer/zshmmut.rs	0.00%	6 Missing ⚠️
zenoh/src/net/routing/interceptor/downsampling.rs	0.00%	6 Missing ⚠️
zenoh/src/net/routing/interceptor/qos_overwrite.rs	0.00%	6 Missing ⚠️
plugins/zenoh-plugin-trait/src/compatibility.rs	0.00%	5 Missing ⚠️
zenohd/src/main.rs	0.00%	4 Missing ⚠️
... and 9 more

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #2023      +/-   ##
==========================================
- Coverage   71.18%   70.91%   -0.28%     
==========================================
  Files         367      367              
  Lines       61866    61897      +31     
==========================================
- Hits        44041    43894     -147     
- Misses      17825    18003     +178     

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