validator: include waited_for_supermajority in startup metric

[AshwinSekar]

useful to determine whether the shred version cleanup logic in blockstore was performed.

[codecov]

Codecov Report

Attention: 8 lines in your changes are missing coverage. Please review.

Comparison is base (bc735fa) 81.6% compared to head (878a2ce) 81.6%.
Report is 3 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff            @@
##           master   #35137     +/-   ##
=========================================
- Coverage    81.6%    81.6%   -0.1%     
=========================================
  Files         832      832             
  Lines      224834   224842      +8     
=========================================
- Hits       183589   183543     -46     
- Misses      41245    41299     +54     

[mergify]

Backports to the stable 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.

[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.