### 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_
def __init__(self, message: str):
        super().__init__(code="ValidationException", status_code=400, message=message)
class DynamoDBApiListener(AwsApiListener):
    def __init__(self, provider=None):
        
        provider = provider or DynamoDBProvider()
        self.provider = provider
        super().__init__("dynamodb", HttpFallbackDispatcher(provider, provider.get_forward_url))
def get_store(context: RequestContext | None = None) -> DynamoDBStore:
    
    _account_id: str = context.account_id if context else get_aws_account_id()
    _region: str = context.region if context else aws_stack.get_region()
    
    if _region == "localhost":
        _region = aws_stack.get_local_region()
    return dynamodb_stores[_account_id][_region]
def find_global_table_region(table_name: str, target_region: str | None = None) -> str | None:
    """
    Check if the table is a Version 2019.11.21 table.
    :param target_region: the region we are looking for
    :param table_name: the name of the table
    :return: the original region; `None` if this is not a global table
    """
    replicas = get_store().REPLICA_UPDATES.get(table_name)
    if not replicas:
        return None
    original_region = list(replicas.keys())[0]
    return original_region if target_region in replicas[original_region] else None
@contextmanager
def modify_context_region(context: RequestContext, region: str):