fix: generating stacking signatures from b58 addresses

[hstove]

This fixes an issue where the generate-stacking-signature command inside the signer CLI would fail when a p2pkh address was provided as an argument.

• Closes stacks-signer generate-stacking-signature CLI parses BTC address incorrectly #4596

[codecov]

Codecov Report

Attention: Patch coverage is 5.30973% with 107 lines in your changes are missing coverage. Please review.

Project coverage is 67.32%. Comparing base (2686009) to head (0338c99).

Additional details and impacted files

@@             Coverage Diff             @@
##             next    #4600       +/-   ##
===========================================
- Coverage   83.46%   67.32%   -16.14%     
===========================================
  Files         470      470               
  Lines      332151   332256      +105     
  Branches      317      317               
===========================================
- Hits       277220   223701    -53519     
- Misses      54923   108547    +53624     
  Partials        8        8               

Files	Coverage Δ
stackslib/src/util_lib/signed_structured_data.rs	95.69% <100.00%> (-2.13%)	⬇️
stacks-signer/src/cli.rs	0.00% <0.00%> (-35.05%)	⬇️

... and 275 files with indirect coverage changes

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