fix: template duplication — fix FieldGroup children + restore ReportH1-H5

Two bugs in the template duplicate flow (EFormService.CreateFields):

1. FieldGroup children were pre-assigned CheckListId but never got
   ParentFieldId set after the parent was created. The children were
   embedded in field.Children and implicitly saved by field.Create(),
   but without the correct ParentFieldId. Fix: detach children before
   creating the parent, then create each child separately with both
   CheckListId and ParentFieldId = field.Id set.

2. ReportH1-H5 were commented out in FindTemplates, so duplicated
   eforms silently lost their report headers. Uncommented.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

Author: renemadsen

eFormAPI/eFormAPI.Web/Services/EFormService.cs

@@ -767,11 +767,11 @@ private static async Task<CheckList> FindTemplates(int idEform, MicrotingDbConte
                 JasperExportEnabled = x.JasperExportEnabled,
                 DocxExportEnabled = x.DocxExportEnabled,
                 ExcelExportEnabled = x.ExcelExportEnabled,
-                //ReportH1 = x.ReportH1,
-                //ReportH2 = x.ReportH2,
-                //ReportH3 = x.ReportH3,
-                //ReportH4 = x.ReportH4,
-                //ReportH5 = x.ReportH5,
+                ReportH1 = x.ReportH1,
+                ReportH2 = x.ReportH2,
+                ReportH3 = x.ReportH3,
+                ReportH4 = x.ReportH4,
+                ReportH5 = x.ReportH5,
                 IsLocked = false,
                 IsEditable = true,
                 IsHidden = false,
@@ -940,15 +940,19 @@ private static async Task CreateFields(int eformId, MicrotingDbContext sdkDbCont
         foreach (var field in fieldsList)
         {
             field.CheckListId = eformId;
-            if (field.FieldTypeId == fieldGroupTypeId)
+            var children = field.Children?.ToList() ?? [];
+            field.Children = [];
+            await field.Create(sdkDbContext);
+
+            if (field.FieldTypeId == fieldGroupTypeId && children.Count > 0)
             {
-                foreach (var fieldChild in field.Children)
+                foreach (var child in children)
                 {
-                    fieldChild.CheckListId = eformId;
+                    child.CheckListId = eformId;
+                    child.ParentFieldId = field.Id;
+                    await child.Create(sdkDbContext);
                 }
             }
-
-            await field.Create(sdkDbContext);
         }
     }