Murisi/fix hw tests by unbatching

[murisi]

Describe your changes

Avoid batching transactions when doing hardware wallet signing because it does not yet support them. Instead sign each transaction separately. Also remove the usage of --use-device flags in the test code wherever they are not supported by the CLI. Also resolved #3797 (comment) regarding informing the user about the requests being made to the hardware wallet.

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 74.60%. Comparing base (9527ea9) to head (672d99e).
Report is 5 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #4228   +/-   ##
=======================================
  Coverage   74.59%   74.60%           
=======================================
  Files         342      342           
  Lines      108724   108724           
=======================================
+ Hits        81101    81110    +9     
+ Misses      27623    27614    -9     

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.