[KGA-72] fix: return uncapped return_data_len from execute_from_outside

[enitrat]

code-423n4/2024-09-kakarot-findings#24

The event is emitted with at most 297 felts of response_len, but the function returns the full data.

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This change is 

[notion-workspace]

execute_from_outside might return incorrect return_data_len

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 63.7%. Comparing base (0fbea3a) to head (82f0799).
Report is 2 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##            main   #1612     +/-   ##
=======================================
- Coverage   63.7%   63.7%   -0.1%     
=======================================
  Files         44      44             
  Lines       8362    8366      +4     
=======================================
- Hits        5332    5330      -2     
- Misses      3030    3036      +6     

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