404 Publisher Model `publishers/google/models/claude-3-sonnet` is not found.

#### Environment details

```
jm/claud3sonnet:$ python --version
Python 3.11.7

(venv_311) 14:21:48 jm@jm:~/repos/testllm/vertexai_loaders:
jm/claud3sonnet:$ cat pyproject.toml | grep 'goog\|lang'
google-generativeai = "^0.2.1"
google-cloud-aiplatform = "1.46.0"
langchain = "0.1.14"
google-cloud-dlp = "^3.13.0"
google-cloud-translate = "^3.14.0"
google-search-results = "^2.4.2"
langchain-community = "0.0.31"

(venv_311) 14:21:53 jm@jm:~/repos/testllm/vertexai_loaders:
jm/claud3sonnet:$ uname -a
Linux jm 5.15.0-100-generic #110-Ubuntu SMP Wed Feb 7 13:28:04 UTC 2024 aarch64 aarch64 aarch64 GNU/Linux

(venv_311) 14:23:13 jm@jm:~/repos/testllm/vertexai_loaders:
jm/claud3sonnet:$ pip --version
pip 24.0 from /home/jm/repos/testllm/vertexai_loaders/venv_311/lib/python3.11/site-packages/pip (python 3.11)

(venv_311) 14:23:22 jm@jm:~/repos/testllm/vertexai_loaders:
jm/claud3sonnet:$ pip show google-cloud-aiplatform
Name: google-cloud-aiplatform
Version: 1.46.0
Summary: Vertex AI API client library
Home-page: https://github.com/googleapis/python-aiplatform
Author: Google LLC
Author-email: googleapis-packages@google.com
License: Apache 2.0
Location: /home/jm/repos/testllm/vertexai_loaders/venv_311/lib/python3.11/site-packages
Requires: docstring-parser, google-api-core, google-auth, google-cloud-bigquery, google-cloud-resource-manager, google-cloud-storage, packaging, proto-plus, protobuf, pydantic, shapely
Required-by: vertexai-experiments
```

#### Steps to reproduce

1. upgrade libraries
2. submit Terms and Conditions form, enable claude3 sonnet in model garden
3. pass in model name `claude-3-sonnet` or `claude-3-sonnet@20240229`

#### Code example

```python
llm = VertexAI(
model_name=claude_3_sonnet,
max_output_tokens=512,
temperature=0.1,
top_p=0.8,
top_k=10,
verbose=True,
)
# ... make query
```

#### Stack trace
```
File "/home/jm/repos/testllm/vertexai_loaders/venv_311/lib/python3.11/site-packages/google/cloud/aiplatform_v1/services/model_garden_service/client.py", line 766, in get_publisher_model
response = rpc(
^^^^
File "/home/jm/repos/testllm/vertexai_loaders/venv_311/lib/python3.11/site-packages/google/api_core/gapic_v1/method.py", line 131, in __call__
return wrapped_func(*args, **kwargs)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/home/jm/repos/testllm/vertexai_loaders/venv_311/lib/python3.11/site-packages/google/api_core/retry/retry_unary.py", line 293, in retry_wrapped_func
return retry_target(
^^^^^^^^^^^^^
File "/home/jm/repos/testllm/vertexai_loaders/venv_311/lib/python3.11/site-packages/google/api_core/retry/retry_unary.py", line 153, in retry_target
_retry_error_helper(
File "/home/jm/repos/testllm/vertexai_loaders/venv_311/lib/python3.11/site-packages/google/api_core/retry/retry_base.py", line 212, in _retry_error_helper
raise final_exc from source_exc
File "/home/jm/repos/testllm/vertexai_loaders/venv_311/lib/python3.11/site-packages/google/api_core/retry/retry_unary.py", line 144, in retry_target
result = target()
^^^^^^^^
File "/home/jm/repos/testllm/vertexai_loaders/venv_311/lib/python3.11/site-packages/google/api_core/grpc_helpers.py", line 78, in error_remapped_callable
raise exceptions.from_grpc_error(exc) from exc
google.api_core.exceptions.NotFound: 404 Publisher Model `publishers/google/models/claude-3-sonnet` is not found.
```

Reference:

- https://console.cloud.google.com/vertex-ai/publishers/anthropic/model-garden/claude-3-sonnet