### 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_
import logging
import re
from typing import Dict, List, Optional
from cachetools import TTLCache
from moto.core.exceptions import JsonRESTError
from localstack.aws.api.dynamodb import ResourceNotFoundException
from localstack.utils.aws import aws_stack
from localstack.utils.json import canonical_json
from localstack.utils.testutil import list_all_resources
LOG = logging.getLogger(__name__)
SCHEMA_CACHE = TTLCache(maxsize=50, ttl=20)
class ItemSet:
    """Represents a set of items and provides utils to find individual items in the set"""
    def __init__(self, items: List[Dict], key_schema: List[Dict]):
        self.items_list = items
        self.key_schema = key_schema
        self._build_dict()
    def _build_dict(self):
        self.items_dict = {}
        for item in self.items_list:
            self.items_dict[self._hashable_key(item)] = item
    def _hashable_key(self, item: Dict):
        keys = SchemaExtractor.extract_keys_for_schema(item=item, key_schema=self.key_schema)
        return canonical_json(keys)
    def find_item(self, item: Dict) -> Optional[Dict]:
        key = self._hashable_key(item)
        return self.items_dict.get(key)
class SchemaExtractor: