### Is there an existing issue for this?

- [X] I have searched the existing issues

### Current Behavior

* Create any table with any records
* Do a TransactGetItems on the table
* Localstack returns 
```
ResourceNotFoundException: Cannot do operations on a non-existent table
```

### Expected Behavior

TransactGetItems should succeed.

### How are you starting LocalStack?

With a docker-compose file

### Steps To Reproduce

#### How are you starting localstack (e.g., `bin/localstack` command, arguments, or `docker-compose.yml`)

```
docker-compose up
```

`docker-compose.yml`
```
version: '3'

services:
  localstack:
    image: localstack/localstack
    environment:
      - DEFAULT_REGION=eu-west-2
      - SERVICES=dynamodb
      - DOCKER_HOST=unix:///var/run/docker.sock
    ports:
      - 4566:4566
```

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

```
#! /bin/bash
aws --endpoint-url=http://localhost:4566 dynamodb create-table --attribute-definitions AttributeName=forumId,AttributeType=S --table-name forum --key-schema AttributeName=forumId,KeyType=HASH --provisioned-throughput ReadCapacityUnits=5,WriteCapacityUnits=5 > /dev/null
aws --endpoint-url=http://localhost:4566 dynamodb put-item --table-name forum --item '{"forumId": {"S": "forum001"}, "data": {"S": "helloworld"}}' > /dev/null
aws --endpoint-url=http://localhost:4566 dynamodb get-item --table-name forum --key '{"forumId": {"S": "forum001"}}' > /dev/null
# This one fails
aws --endpoint-url=http://localhost:4566 dynamodb transact-get-items --transact-items '[{"Get": {"Key":{"forumId": {"S": "forum001"}}, "TableName": "forum"}}]' > /dev/null
```


### Environment

```markdown
- OS: MacOS 10.15.7
- LocalStack: latest, digest 843db39ff1df83fd537e15b30e39d6fb8c3590efd6bf3f6f96b1734418fbd19f
```


### Anything else?

This works in `localstack/localstack:0.14.1`
ddb_record.pop("NewImage", None)
        return records
    @classmethod
    def is_kinesis_stream_exists(cls, stream_arn):
        kinesis = aws_stack.connect_to_service("kinesis")
        stream_name_from_arn = stream_arn.split("/", 1)[1]
        
        filtered = list(
            filter(
                lambda stream_name: stream_name == stream_name_from_arn,
                kinesis.list_streams()["StreamNames"],
            )
        )
        return bool(filtered)
class SSEUtils:
    """Utils for server-side encryption (SSE)"""
    @classmethod
    def get_sse_kms_managed_key(cls):
        from localstack.services.kms import provider
        existing_key = MANAGED_KMS_KEYS.get(aws_stack.get_region())
        if existing_key:
            return existing_key
        kms_client = aws_stack.connect_to_service("kms")
        key_data = kms_client.create_key(Description="Default key that protects DynamoDB data")
        key_id = key_data["KeyMetadata"]["KeyId"]
        provider.set_key_managed(key_id)
        MANAGED_KMS_KEYS[aws_stack.get_region()] = key_id
        return key_id
    @classmethod
    def get_sse_description(cls, data):