[fix]: Fix clap panic on parsing relayer commands

[batconjurer]

Describe your changes

Currently, the binaries panic on trying to parse commands pertaining to the relayer binary. This fixes that.

Checklist before merging

• If this PR has some consensus breaking changes, I added the corresponding breaking:: labels
  • This will require 2 reviewers to approve the changes
• If this PR requires changes to the docs or specs, a corresponding PR is opened in the namada-docs repo
  • Relevant PR if applies:
• If this PR affects services such as namada-indexer or namada-masp-indexer, a corresponding PR is opened in that repo
  • Relevant PR if applies:

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 73.02%. Comparing base (760462b) to head (6daffe4).
Report is 4 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #3841   +/-   ##
=======================================
  Coverage   73.01%   73.02%           
=======================================
  Files         340      340           
  Lines      104750   104750           
=======================================
+ Hits        76488    76489    +1     
+ Misses      28262    28261    -1     

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