improve(dashboard-metrics): remove day name from label on month view
improve(dashboard-metrics): remove day name from label on month view

Related to CAM-6676

TitanUser/camunda-bpm-webapp,xlinur/camunda-bpm-webapp,TitanUser/camunda-bpm-webapp,TitanUser/camunda-bpm-webapp,xlinur/camunda-bpm-webapp,xlinur/camunda-bpm-webapp