Always use storage errors on native VPs

[sug0]

Describe your changes

Replace eyre!() errors with namada_storage errors. This change will be useful in a future PR, to allow easily downcasting to the error contained in a boxed namada_storage result.

Indicate on which release or other PRs this topic is based on

v0.32.0

Checklist before merging to draft

• I have added a changelog
• Git history is in acceptable state

[codecov]

Codecov Report

Attention: Patch coverage is 60.00000% with 24 lines in your changes are missing coverage. Please review.

Project coverage is 53.44%. Comparing base (5e0b162) to head (18b2f75).
Report is 4 commits behind head on main.

Files	Patch %	Lines
...ledger/native_vp/ethereum_bridge/bridge_pool_vp.rs	55.17%	13 Missing ⚠️
crates/namada/src/ledger/native_vp/mod.rs	50.00%	10 Missing ⚠️
crates/ethereum_bridge/src/storage/parameters.rs	85.71%	1 Missing ⚠️

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #2852   +/-   ##
=======================================
  Coverage   53.44%   53.44%           
=======================================
  Files         310      310           
  Lines      101574   101575    +1     
=======================================
+ Hits        54288    54289    +1     
  Misses      47286    47286           

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[sug0]

rebased on v0.32.0