Only allow tnam1... addresses in balances.toml

[sug0]

Describe your changes

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

[codecov]

Codecov Report

Attention: Patch coverage is 61.11111% with 21 lines in your changes missing coverage. Please review.

Project coverage is 61.20%. Comparing base (4cd4356) to head (5098900).
Report is 28 commits behind head on main.

Files	Patch %	Lines
crates/apps_lib/src/config/genesis.rs	45.94%	20 Missing ⚠️
crates/apps_lib/src/config/genesis/templates.rs	66.66%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #3645      +/-   ##
==========================================
- Coverage   61.24%   61.20%   -0.04%     
==========================================
  Files         312      312              
  Lines      101374   101362      -12     
==========================================
- Hits        62086    62043      -43     
- Misses      39288    39319      +31     

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