ensure bricked gossip control account is offcurve

[gregcusack]

Problem

need test to ensure gossip control account is offcurve

Summary of Changes

add test

[codecov-commenter]

Codecov Report

❌ Patch coverage is 80.00000% with 1 line in your changes missing coverage. Please review.
✅ Project coverage is 83.2%. Comparing base (9b5bd84) to head (7a43efa).
⚠️ Report is 2 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff            @@
##           master    #8300     +/-   ##
=========================================
- Coverage    83.2%    83.2%   -0.1%     
=========================================
  Files         836      836             
  Lines      367021   367026      +5     
=========================================
- Hits       305577   305520     -57     
- Misses      61444    61506     +62     

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[alexpyattaev]

Abundance of caution is nice

[t-nelson]

this is another situation where it's really more ideal to revert and commit together. please be more careful and forward thinking in the future

[mergify]

Backports to the beta branch are to be avoided unless absolutely necessary for fixing bugs, security issues, and perf regressions. Changes intended for backport should be structured such that a minimum effective diff can be committed separately from any refactoring, plumbing, cleanup, etc that are not strictly necessary to achieve the goal. Any of the latter should go only into master and ride the normal stabilization schedule. Exceptions include CI/metrics changes, CLI improvements and documentation updates on a case by case basis.