core: fix warning on TemplateTool_viewInstallRepositoryBusinessTemplateListDialog

Status Job ID Name Coverage
  External
passed ERP5.CodingStyleTest-TestRunner1

02:27:49

failed ERP5.PerformanceTest-TestRunner1

00:39:32

failed ERP5.UnitTest-TestRunner1

02:31:32

passed ERP5.CodingStyleTest-TestRunner1

01:48:34

passed ERP5.PerformanceTest-TestRunner1

00:38:09

failed ERP5.UnitTest-TestRunner1

02:25:20

failed ERP5.UnitTest-TestRunner1

02:12:02

failed ERP5.UnitTest-TestRunner1

02:02:50

failed ERP5.UnitTest-TestRunner1

01:53:38