Workflow start didn't use filter

(cherry picked from commit e095b23e)

process/Workflow_lib/process.js

@@ -40,10 +40,7 @@ WorkflowUtils.getPossibleWorkflowDefinitions = function (pContext, pAction)
 WorkflowUtils.openNewInstance = function (pVariables, pTargetId, pTargetContext, pSelectionFilter)
 {
     if ((!pTargetId || pTargetId.length === 0) && pSelectionFilter)
-    {
         pTargetId = [];
-        pSelectionFilter = JSON.stringify(pSelectionFilter);
-    }
     
     pVariables = WorkflowUtils.appendMandatoryVariables(pVariables, pTargetId, pTargetContext);