only append package name if package name exists

Author: toriwei

sqlmesh/dbt/test.py

@@ -154,7 +154,7 @@ def to_sqlmesh(self, context: DbtContext) -> Audit:
         blocking = self.severity == Severity.ERROR
 
         audit: Audit
-        if self.package_name != context.project_name:
+        if self.package_name and self.package_name != context.project_name:
             self.name = f"{self.package_name}.{self.name}"
 
         if self.is_standalone: