### 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_
result = self.forward_request(context)
        table_description = result["TableDescription"]
        backend = get_store(context)
        backend.table_definitions[table_name] = table_definitions = dict(create_table_input)
        if "TableId" not in table_definitions:
            table_definitions["TableId"] = long_uid()
        if "SSESpecification" in table_definitions:
            sse_specification = table_definitions.pop("SSESpecification")
            table_definitions["SSEDescription"] = SSEUtils.get_sse_description(sse_specification)
        if table_definitions:
            table_content = result.get("Table", {})
            table_content.update(table_definitions)
            table_description.update(table_content)
        if "StreamSpecification" in table_definitions:
            create_dynamodb_stream(table_definitions, table_description.get("LatestStreamLabel"))
        if "TableClass" in table_definitions:
            table_class = table_description.pop("TableClass", None) or table_definitions.pop(
                "TableClass"
            )
            table_description["TableClassSummary"] = {"TableClass": table_class}
        tags = table_definitions.pop("Tags", [])
        if tags:
            table_arn = table_description["TableArn"]
            table_arn = self.fix_table_arn(table_arn)
            get_store(context).TABLE_TAGS[table_arn] = {tag["Key"]: tag["Value"] for tag in tags}
        
        table_description.pop("Tags", None)
        table_description.pop("BillingMode", None)
        return result
    def delete_table(self, context: RequestContext, table_name: TableName) -> DeleteTableOutput: