ActivateProjectTool: Return instructions to read manual also if project is already activated

src/serena/tools/config_tools.py

@@ -30,8 +30,9 @@ class ActivateProjectTool(Tool, ToolMarkerDoesNotRequireActiveProject):
         """
         is_new_activation = self.agent.activate_project_from_path_or_name(project)
         if not is_new_activation:
-            return "Project was already active."
-        result = self.agent.get_project_activation_message()
+            result = "Project was already active."
+        else:
+            result = self.agent.get_project_activation_message()
         result += "\nIMPORTANT: If you have not yet read the 'Serena Instructions Manual', do it now before continuing!"
         return result