Fixed the speculative_context integration test for the hardware wallet.

[murisi]

Describe your changes

Fixed the speculative_context integration test for the hardware wallet by ensuring that the --use-device flag is applied to its commands when the environment variable NAMADA_E2E_USE_DEVICE=true.

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 74.54%. Comparing base (f037759) to head (4558855).
Report is 4 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #4418      +/-   ##
==========================================
+ Coverage   74.53%   74.54%   +0.01%     
==========================================
  Files         339      339              
  Lines      110504   110504              
==========================================
+ Hits        82359    82372      +13     
+ Misses      28145    28132      -13     

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