[KGA-77] [KGA-35] [KGA-7] fix: DualVMToken totalSupply

[enitrat]

Fixes an issue where totalSupply was skipping the high-part of the u256 reported in code-423n4/2024-09-kakarot-findings#32

• Correctly deserialize return value
• Update test to launch a token with populated (low, high) parts of the u256 struct

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This change is 

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 63.3%. Comparing base (6cbc820) to head (0e01363).
Report is 4 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##            main   #1569     +/-   ##
=======================================
- Coverage   63.4%   63.3%   -0.2%     
=======================================
  Files         44      44             
  Lines       8335    8335             
=======================================
- Hits        5292    5278     -14     
- Misses      3043    3057     +14     

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[notion-workspace]

DualVMToken@totalSupply does not account for the high part total_supply

[notion-workspace]

Incorrect totalsupply value will be returned due to erroneous return data decode implementation

[notion-workspace]

Incorrect decoding of supply in DualVmToken