### 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_
return aws_stack.dynamodb_table_exists(table_name)
    @staticmethod
    def prepare_request_headers(headers: Dict):
        def _replace(regex, replace):
            headers["Authorization"] = re.sub(
                regex, replace, headers.get("Authorization") or "", flags=re.IGNORECASE
            )
        
        
        _replace(r"Credential=[^/]+/", rf"Credential={constants.INTERNAL_AWS_ACCESS_KEY_ID}/")
        
        _replace(
            r"Credential=([^/]+/[^/]+)/local(host)?/",
            rf"Credential=\1/{aws_stack.get_local_region()}/",
        )
    def fix_consumed_capacity(self, request: Dict, result: Dict):
        
        
        table_name = request.get("TableName")
        return_cap = request.get("ReturnConsumedCapacity")
        if "ConsumedCapacity" not in result and return_cap in ["TOTAL", "INDEXES"]:
            request["ConsumedCapacity"] = {
                "TableName": table_name,
                "CapacityUnits": 5,  
                "ReadCapacityUnits": 2,
                "WriteCapacityUnits": 3,
            }
    def fix_table_arn(self, table_arn: str) -> str: