refactor: consolidate trampoline signature creation

[y1yang0]

Upstream Backport

[codecov-commenter]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 87.20%. Comparing base (6e0a1a4) to head (98d4a38).

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #629   +/-   ##
=======================================
  Coverage   87.20%   87.20%           
=======================================
  Files          30       30           
  Lines        1243     1243           
=======================================
  Hits         1084     1084           
  Misses        107      107           
  Partials       52       52           

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