CodingStyleTestCase: ignore duplicate actions for OfficeJS actions

OfficeJS use another mechanism for actions registration, so duplicate
actions defined on the portal type is not necessarly a problem, as long as
all actions are not registered in the same app.
Status Job ID Name Coverage
  External
passed ERP5.CodingStyleTest-Master

failed ERP5.PerformanceTest-Master

00:24:20

running ERP5.UnitTest-Master

29296:54:38

running ERP5.UnitTest-Master.Medusa

29296:54:36

passed SlapOS.Eggs.UnitTest-Master.Python2

passed SlapOS.Eggs.UnitTest-Master.Python3

00:20:03

passed ERP5.CodingStyleTest-Master

00:34:59

passed SlapOS.Eggs.UnitTest-Master.Python2

00:07:58