Fix date modal saving for new resources

frontend/src/app/shared/components/fields/edit/field-types/combined-date-edit-field.component.ts

@@ -66,6 +66,7 @@ export class CombinedDateEditFieldComponent extends DatePickerEditFieldComponent
 
   public save():void {
     this.handler.handleUserSubmit();
+    this.onModalClosed();
   }
 
   public cancel():void {

spec/features/work_packages/new/new_work_package_spec.rb

@@ -491,7 +491,6 @@ describe 'new work package', js: true do
       date_field = split_create_page.edit_field(:combinedDate)
       date_field.expect_value("#{parent.start_date} - #{parent.due_date}")
 
-      byebug
       date_field.click_to_open_datepicker
       date_field.update ['', parent.due_date]