fix: Reset IsLatest also for not published workflows on PublishAsync

When an unpublished workflow is published, IsLatest is not set to false because the PublishAsync method was only looking for published workflows.

src/core/Elsa.Core/Services/Workflows/WorkflowPublisher.cs

@@ -59,7 +59,7 @@ namespace Elsa.Services.Workflows
         {
             var publishedDefinition = await _workflowDefinitionStore.FindByDefinitionIdAsync(
                 workflowDefinition.DefinitionId,
-                VersionOptions.Published,
+                VersionOptions.LatestOrPublished,
                 cancellationToken);
 
             if (publishedDefinition != null)
@@ -177,4 +177,4 @@ namespace Elsa.Services.Workflows
             return workflowDefinition;
         }
     }
-}
+}