### 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_
matching_item = comparison_set.find_item(item)
        if matching_item == item:
            return
        
        if comparison_set == after:
            if matching_item:
                return
            event_name = "REMOVE"
        else:
            event_name = "INSERT" if not matching_item else "MODIFY"
        old_image = item if event_name == "REMOVE" else matching_item
        new_image = matching_item if event_name == "REMOVE" else item
        
        keys = SchemaExtractor.extract_keys_for_schema(item=item, key_schema=key_schema)
        record = {
            "eventName": event_name,
            "eventID": short_uid(),
            "dynamodb": {
                "Keys": keys,
                "NewImage": new_image,
                "SizeBytes": _get_size_bytes(item),
            },
        }
        if stream_spec:
            record["dynamodb"]["StreamViewType"] = stream_spec["StreamViewType"]
        if old_image:
            record["dynamodb"]["OldImage"] = old_image
        result.append(record)
    
    for item in after.items_list: