fix: ensure stream is closed after being read from app-dev's GetDefinitions method

backend/src/Designer/Controllers/ProcessModelingController.cs

@@ -57,21 +57,19 @@ public async Task<IActionResult> UpsertProcessDefinitionAndNotify(string org, st
                     new JsonSerializerOptions { PropertyNamingPolicy = JsonNamingPolicy.CamelCase })
                 : null;
 
-            Stream stream = content.OpenReadStream();
-
+            string developer = AuthenticationHelper.GetDeveloperUserName(HttpContext);
+            var editingContext = AltinnRepoEditingContext.FromOrgRepoDeveloper(org, repo, developer);
+
+            await using Stream stream = content.OpenReadStream();
             try
             {
-                await Guard.AssertValidXmlStreamAndRewindAsync(stream);
+                await _processModelingService.SaveProcessDefinitionAsync(editingContext, stream, cancellationToken);
             }
             catch (ArgumentException)
             {
                 return BadRequest("BPMN file is not valid XML");
             }
 
-            string developer = AuthenticationHelper.GetDeveloperUserName(HttpContext);
-            var editingContext = AltinnRepoEditingContext.FromOrgRepoDeveloper(org, repo, developer);
-            await _processModelingService.SaveProcessDefinitionAsync(editingContext, stream, cancellationToken);
-
             if (metadataObject?.TaskIdChange is not null)
             {
                 await _mediator.Publish(new ProcessTaskIdChangedEvent

backend/src/Designer/Infrastructure/GitRepository/AltinnAppGitRepository.cs

@@ -816,8 +816,18 @@
         public Definitions GetDefinitions()
         {
             Stream processDefinitionStream = GetProcessDefinitionFile();
+
+            MemoryStream memoryStream = new MemoryStream();
+            processDefinitionStream.CopyTo(memoryStream);
+
+            memoryStream.Position = 0;
+
             XmlSerializer serializer = new(typeof(Definitions));
-            return (Definitions)serializer.Deserialize(processDefinitionStream);
+            Definitions definitions = (Definitions)serializer.Deserialize(memoryStream);
+
+            processDefinitionStream.Close();
+
+            return definitions;
         }
 
         /// <summary>

backend/src/Designer/Middleware/UserRequestSynchronization/Services/RequestSyncEvaluators/EndpointNameSyncEvaluator.cs

@@ -54,6 +54,7 @@ public class EndpointNameSyncEvaluator : IRequestSyncEvaluator
                 nameof(ProcessModelingController.AddDataTypeToApplicationMetadata),
                 nameof(ProcessModelingController.DeleteDataTypeFromApplicationMetadata),
                 nameof(ProcessModelingController.UpsertProcessDefinitionAndNotify),
+                nameof(ProcessModelingController.ProcessDataTypesChangedNotify),
                 nameof(ProcessModelingController.SaveProcessDefinitionFromTemplate)
             )
         },