### Is there an existing issue for this?

- [X] I have searched the existing issues

### Current Behavior

DynamoDB does not correctly namespace resources based on region and account ID. 

For instance, using the same table name across accounts and regions throws an error.

### Expected Behavior

It must be possible to create resources with same name on different regions and/or different accounts.

### How are you starting LocalStack?

With a docker-compose file

### Steps To Reproduce

#### Client commands (e.g., AWS SDK code snippet, or sequence of "awslocal" commands)

```
  $ AWS_ACCESS_KEY_ID=445500880268 AWS_DEFAULT_REGION=eu-central-1 \
    awslocal dynamodb create-table --table-name CertificateTargets-local1 \
        --key-schema AttributeName=target_uuid,KeyType=HASH \
        --attribute-definitions AttributeName=target_uuid,AttributeType=S \
        --provisioned-throughput ReadCapacityUnits=1000,WriteCapacityUnits=1000

  $ AWS_ACCESS_KEY_ID=445500880268 AWS_DEFAULT_REGION=us-east-1 \
    awslocal dynamodb create-table --table-name CertificateTargets-local1 \
        --key-schema AttributeName=target_uuid,KeyType=HASH \
        --attribute-definitions AttributeName=target_uuid,AttributeType=S \
        --provisioned-throughput ReadCapacityUnits=1000,WriteCapacityUnits=1000

    # ResourceInUseException!

  $ AWS_ACCESS_KEY_ID=000000000000 \
    awslocal dynamodb create-table --table-name CertificateTargets-local1 \
        --key-schema AttributeName=target_uuid,KeyType=HASH \
        --attribute-definitions AttributeName=target_uuid,AttributeType=S \
        --provisioned-throughput ReadCapacityUnits=1000,WriteCapacityUnits=1000

    # ResourceInUseException!
```

### Environment

```markdown
OS: Ubuntu 22.04
LocalStack: latest
```


### Anything else?

_No response_
if is_local_env(env):
                endpoint_url = get_local_service_url(service_name)
                verify = False
            backend_env_name = "%s_BACKEND" % service_name.upper()
            backend_url = os.environ.get(backend_env_name, "").strip()
            if backend_url:
                endpoint_url = backend_url
        
        if service_name == "s3":
            if re.match(r"https?://localhost(:[0-9]+)?", endpoint_url):
                endpoint_url = endpoint_url.replace("://localhost", "://%s" % get_s3_hostname())
        
        boto_session = get_boto3_session(cache=cache)
        boto_config = config or botocore.client.Config()
        boto_factory = boto_session.client if client else boto_session.resource
        
        
        boto_config.max_pool_connections = MAX_POOL_CONNECTIONS
        new_client = boto_factory(
            service_name,
            region_name=region,
            endpoint_url=endpoint_url,
            verify=verify,
            config=boto_config,
            **kwargs,
        )
        
        
        if client and internal:
            def _add_internal_header(request, **kwargs):