[O2B-1408] Update "runs" column label on LHC period overview

[isaachilly]

Change runs column title, so to have a clearer meaning to users.

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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 45.60%. Comparing base (f977e12) to head (99bd9ed).
⚠️ Report is 1 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #2082   +/-   ##
=======================================
  Coverage   45.60%   45.60%           
=======================================
  Files        1039     1039           
  Lines       17313    17313           
  Branches     3142     3142           
=======================================
  Hits         7896     7896           
  Misses       9417     9417           

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