[torchlib] Fix prod and normal.float_float

[justinchuby]

• torch.prod: Does not preserve dimensions
• aten::normal.float_float: May be called with more arguments

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 70.20%. Comparing base (f1ab7bb) to head (a4747c8).
⚠️ Report is 2 commits behind head on main.
✅ All tests successful. No failed tests found.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #2762   +/-   ##
=======================================
  Coverage   70.20%   70.20%           
=======================================
  Files         227      227           
  Lines       27312    27314    +2     
  Branches     2768     2769    +1     
=======================================
+ Hits        19174    19177    +3     
+ Misses       7190     7188    -2     
- Partials      948      949    +1     

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