fix: convert caller address to cosmos address before signer checking

[beer-1]

No description provided.

[codecov]

Codecov Report

Attention: Patch coverage is 70.58824% with 5 lines in your changes are missing coverage. Please review.

Project coverage is 31.30%. Comparing base (9fcbdb3) to head (4e49c65).
Report is 1 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main      #16      +/-   ##
==========================================
+ Coverage   31.24%   31.30%   +0.05%     
==========================================
  Files          68       68              
  Lines        8173     8175       +2     
==========================================
+ Hits         2554     2559       +5     
+ Misses       5273     5270       -3     
  Partials      346      346              

Files	Coverage Δ
x/evm/precompiles/cosmos/contract.go	48.57% <70.58%> (+2.32%)	⬆️