feat[venom]: allow SCCP to run without removing allocas

[charles-cooper]

this allows us to run it before mem2var, and in the future, will allow us to keep allocas around longer for alias analysis.

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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 92.80%. Comparing base (533682d) to head (d1974e3).
Report is 1 commits behind head on master.

Additional details and impacted files

@@           Coverage Diff           @@
##           master    #4655   +/-   ##
=======================================
  Coverage   92.80%   92.80%           
=======================================
  Files         131      131           
  Lines       18947    18953    +6     
  Branches     3289     3290    +1     
=======================================
+ Hits        17583    17589    +6     
  Misses        933      933           
  Partials      431      431           

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[charles-cooper]

marking as draft since there is a slight bytecode regression