MultiTenancyConfig Mutable parameters is immutable

[mohamedshahin-weaviate]

How to reproduce this bug?

1. Create a collection
2. Enable MT

   multi_tenancy_config=Configure.multi_tenancy(
       enabled=True,
       auto_tenant_creation=False,
   )

3. Ensure the schema is created and configuration is set as expected
4. Use

   
   from weaviate.classes.config import Reconfigure

col_name = client.collections.get("") col_name.config.update( multi_tenancy_config=Reconfigure.multi_tenancy( auto_tenant_creation=True ) )

5. Observe the error

> UnexpectedStatusCodeError: Collection configuration may not have been updated.! Unexpected status code: 422, with response body: {'error': [{'message': 'module config is immutable'}]}.

By looking at Mutability in the docs, MultiTenancyConfig parameters are Mutable: https://weaviate.io/developers/weaviate/config-refs/schema#mutability

### What is the expected behavior?

To be able to update MultiTenancyConfig Mutable parameters between FALSE/TRUE

### What is the actual behavior?

{'error': [{'message': 'module config is immutable'}]}.

### Supporting information

Weaviate Client Version: 4.8.1
Weaviate Server Version: 1.25.14 (Also tested on 1.26)

### Server Version

1.25.14

### Code of Conduct

- [X] I have read and agree to the Weaviate's [Contributor Guide](https://weaviate.io/developers/contributor-guide) and [Code of Conduct](https://weaviate.io/service/code-of-conduct)

[tsmith023]

@mohamedshahin-weaviate, we have a test for this user journey here. Can you post the rest of your code that creates the collection? I have a feeling that might be the uniqueness to your problem causing the issue!

[mohamedshahin-weaviate]

This is the collection I test with:

from weaviate.classes.config import Configure, Property, DataType, Tokenization

client.collections.create(
    "Transcription",
    vectorizer_config=Configure.Vectorizer.text2vec_openai(
        model="text-embedding-3-large",
        dimensions=3072,
    ),
    properties=[
        Property(
            name="text",
            data_type=DataType.TEXT,
            index_filterable=True,
            index_searchable=True,
            tokenization=Tokenization.LOWERCASE,
        ),
        Property(
            name="createdAt",
            data_type=DataType.DATE,
            index_filterable=True,
        ),
        Property(
            name="searchText",
            data_type=DataType.TEXT,
            index_filterable=True,
            index_searchable=True,
            tokenization=Tokenization.LOWERCASE,
        ),
        Property(
            name="transcriptionIntervalId",
            data_type=DataType.TEXT,
            index_filterable=True,
            index_searchable=True,
            tokenization=Tokenization.FIELD,
            skip_vectorization=True,
        ),
    ],
    inverted_index_config=Configure.inverted_index(
        bm25_b=0.7,
        bm25_k1=1.25,
        index_null_state=True,
        index_property_length=True,
        index_timestamps=True
    ),
    multi_tenancy_config=Configure.multi_tenancy(
        enabled=True,
        auto_tenant_creation=True,
    )
)