feat(storage): rework raw cells cache

[Rexagon]

No description provided.

[codecov]

Codecov Report

Attention: Patch coverage is 52.76382% with 94 lines in your changes missing coverage. Please review.

Project coverage is 43.77%. Comparing base (3cb9be6) to head (c41423f).

Files with missing lines	Patch %	Lines
storage/src/store/shard_state/cell_storage.rs	52.63%	84 Missing and 6 partials ⚠️
storage/src/store/shard_state/mod.rs	62.50%	2 Missing and 1 partial ⚠️
storage/src/store/shard_state/store_state_raw.rs	0.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #500      +/-   ##
==========================================
- Coverage   43.83%   43.77%   -0.06%     
==========================================
  Files         269      269              
  Lines       47294    47305      +11     
  Branches    47294    47305      +11     
==========================================
- Hits        20733    20710      -23     
- Misses      25498    25531      +33     
- Partials     1063     1064       +1     

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