fix: bad response type in /anthropic/claude.py

[husainsyed]

Bug: Running Anthropic with search_knowledge=True yields:

Traceback (most recent call last):
  File "C:\Users\hassa\AppData\Local\Packages\PythonSoftwareFoundation.Python.3.11_qbz5n2kfra8p0\LocalCache\local-packages\Python311\site-packages\phi\llm\anthropic\claude.py", line 405, in response_stream
    yield from self.response(messages=messages)
               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "C:\Users\hassa\AppData\Local\Packages\PythonSoftwareFoundation.Python.3.11_qbz5n2kfra8p0\LocalCache\local-packages\Python311\site-packages\phi\llm\anthropic\claude.py", line 168, in response
    response_content: TextBlock = response.content[0].text  # type: ignore
                                  ^^^^^^^^^^^^^^^^^^^^^^^^
  File "C:\Users\hassa\AppData\Local\Packages\PythonSoftwareFoundation.Python.3.11_qbz5n2kfra8p0\LocalCache\local-packages\Python311\site-packages\pydantic\main.py", line 853, in __getattr__
    raise AttributeError(f'{type(self).__name__!r} object has no attribute {item!r}')
AttributeError: 'ToolUseBlock' object has no attribute 'text'

Steps to reproduce:
Run on a knowledge base with search_knowledge=True for 5-10 times - you will run into this error.

Fix:
Added type checking for both TextBlock & ToolUseBlock.

[jacobweiss2305]

Tested and approved