### 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_
self, context: RequestContext, service_request: ServiceRequest = None
    ) -> ServiceResponse:
        
        self.check_provisioned_throughput(context.operation.name)
        
        self.prepare_request_headers(context.request.headers)
        return self.request_forwarder(context, service_request)
    def get_forward_url(self) -> str:
        """Return the URL of the backend DynamoDBLocal server to forward requests to"""
        return f"http://{LOCALHOST}:{server.get_server().port}"
    def on_before_start(self):
        start_dynamodb()
        wait_for_dynamodb()
    def handle_shell_ui_redirect(self, request: werkzeug.Request) -> Response:
        headers = {"Refresh": f"0; url={config.service_url('dynamodb')}/shell/index.html"}
        return Response("", headers=headers)
    def handle_shell_ui_request(self, request: werkzeug.Request, req_path: str) -> Response: