Disable off_prompt in local vector store client examples

[cjkindel]

Output artifacts from these tools will no longer go into TaskMemory. This is needed as there is no logic to retrieve the artifacts from TaskMemory in these examples. These only previously functioned through the underlying LLM, not the information present in the local vector store.

Example of failure in subtask logs:

INFO     Subtask 0947c8fa7180443a832c7efc2a6cd0bb
    Thought: The information about the "Attention Is All You Need" paper is stored in the memory. I will retrieve this information to provide the user with a detailed answer.                                                                  
    Action: {"name": "MemoryRetrieval", "path": "retrieve", "input": {"values": {"memory_name": "TaskMemory", "artifact_namespace": "ee06dca25dd64761a139aeabe9c07f0e"}}}
INFO     Subtask 0947c8fa7180443a832c7efc2a6cd0bb
    Response: tool not found 

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📚 Documentation preview 📚: https://griptape--199.org.readthedocs.build/en/199/

The base branch was changed.