[O2B-1408] Use plain string for Runs column name

Author: isaachilly

lib/public/views/lhcPeriods/ActiveColumns/lhcPeriodsActiveColumns.js

@@ -38,7 +38,7 @@ export const lhcPeriodsActiveColumns = {
     },
 
     associatedRuns: {
-        name: h('', 'Runs (online flags)'),
+        name: 'Runs (online flags)',
         visible: true,
         format: (_, { id, runsCount }) =>
             runsCount === 0