Route param.* keys from porespy dicts into network params

[ma-sadeghi]

When loading a porespy network dict via network_from_porespy, the network.update(net) call bypasses Network.__setitem__, so any param.* entries land as raw dict items instead of being routed into _params. That breaks project save/load round-trips: pickle re-invokes __setitem__ on load, which tries to write to _params before __init__ has set it up.

Fix is to pop param.* keys before update() and assign them individually so they go through the proper code path.

This pairs with PMEAL/porespy#1165, which starts emitting param.voxel_size and param.ndim from network extraction so they can be used downstream (e.g., for rescale_network).

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 87.8%. Comparing base (78a83c8) to head (d057aee).
⚠️ Report is 5 commits behind head on dev.

Additional details and impacted files

@@           Coverage Diff           @@
##             dev   #3046     +/-   ##
=======================================
+ Coverage   87.7%   87.8%   +0.1%     
=======================================
  Files        151     151             
  Lines       8879    8882      +3     
=======================================
+ Hits        7792    7804     +12     
+ Misses      1087    1078      -9     

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