[EVM] call SendCoinsAndWei to support 18-decimal point precision

[codchen]

Describe your changes and provide context

Previously we were truncating any amount after the sixth decimal point in balance operations, which could cause confusion to some developers or just outright render some applications unusable. This PR makes use of the new bank keeper functions introduced in sei-protocol/sei-cosmos#386 to handle amounts up to 18 decimal points properly.

Testing performed to validate your change

unit test
integrated with local sei

[codecov]

Codecov Report

Attention: 13 lines in your changes are missing coverage. Please review.

Comparison is base (0580149) 66.17% compared to head (2dbe32e) 66.06%.

Additional details and impacted files

@@            Coverage Diff             @@
##              evm    #1191      +/-   ##
==========================================
- Coverage   66.17%   66.06%   -0.12%     
==========================================
  Files         329      329              
  Lines       21536    21552      +16     
==========================================
- Hits        14252    14238      -14     
- Misses       6509     6540      +31     
+ Partials      775      774       -1     

Files	Coverage Δ
aclmapping/evm/mappings.go	91.39% <100.00%> (+0.41%)	⬆️
app/app.go	75.04% <ø> (ø)
x/evm/state/utils.go	100.00% <100.00%> (ø)
x/evm/module.go	70.58% <77.77%> (+1.35%)	⬆️
x/evm/state/balance.go	77.55% <76.47%> (-0.45%)	⬇️
x/evm/state/statedb.go	38.66% <0.00%> (-1.62%)	⬇️

... and 2 files with indirect coverage changes