Improve conversion of EVM addresses

[turbolent]

Description

Use toConstantSized function to convert [UInt8] to [UInt8;20] needed for EVM.EVMAddress

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For contributor use:

• Targeted PR against main branch
• Linked to Github issue with discussion and accepted design OR link to spec that describes this work.
• Code follows the standards mentioned here.
• Updated relevant documentation
• Re-reviewed Files changed in the Github PR explorer
• Added appropriate labels

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 86.33%. Comparing base (a9d52f9) to head (5a46d92).

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #110   +/-   ##
=======================================
  Coverage   86.33%   86.33%           
=======================================
  Files          17       17           
  Lines         922      922           
=======================================
  Hits          796      796           
  Misses        126      126           

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[sisyphusSmiling]

Thanks for the PR @turbolent! I'm not able to make commit suggestions as they span deleted lines. Could you update the changes to utilize EVM.addressFromString as was used in https://github.com/onflow/flow-port/pull/310 please? Or just let me know if you'd rather I do it and I can push the changes to this branch

[turbolent]

@sisyphusSmiling good idea, done in 5a46d92