### 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_
unprocessed_put_items=unprocessed_put_items,
            unprocessed_delete_items=unprocessed_delete_items,
            existing_items=existing_items,
        )
        streams_enabled_cache = {}
        event_sources_or_streams_enabled = False
        for record in records:
            event_sources_or_streams_enabled = (
                event_sources_or_streams_enabled
                or has_event_sources_or_streams_enabled(
                    record["eventSourceARN"], cache=streams_enabled_cache
                )
            )
        if event_sources_or_streams_enabled:
            self.forward_stream_records(records)
        
        if any(unprocessed_items):
            table_name = list(request_items.keys())[0]
            unprocessed = result["UnprocessedItems"]
            if table_name not in unprocessed:
                unprocessed[table_name] = []
            for key in ["PutRequest", "DeleteRequest"]:
                if any(unprocessed_items[key]):
                    unprocessed_items[table_name].append({key: unprocessed_items[key]})
            for key in list(unprocessed.keys()):
                if not unprocessed.get(key):
                    del unprocessed[key]
        return result
    @handler("BatchGetItem")
    def batch_get_item(