### Is there an existing issue for this?

- [X] I have searched the existing issues

### Current Behavior

This looks similar to https://github.com/localstack/localstack/issues/6471

I am trying to sign something using KMS for some tests. It seems like doing so using an alias does not work. For example I create a key and an alias like so:

```
# Add a key used for signing urls
aws-cli --endpoint-url=http://localhost:4566 kms create-key \
  --key-usage SIGN_VERIFY \
  --key-spec RSA_4096 


# Add well known alias for key
aws-cli --endpoint-url=http://localhost:4566 kms create-alias \
  --alias-name "some-nice-alias-name" \
  --target-key-id <key id generated above>
```

I can see that this looks to have worked by verifying the key and alias on the CLI

```
aws-cli --endpoint-url=http://localhost:4566 kms list-keys
{
    "Keys": [
        {
            "KeyId": "f7d2d869-f6b8-4977-96ea-5bd70cb0d5f2",
            "KeyArn": "arn:aws:kms:us-east-1:000000000000:key/<someuuid>"
        }
    ]
}
```

and

```
 aws-cli --endpoint-url=http://localhost:4566 kms list-aliases
{
    "Aliases": [
        {
            "AliasName": "census-webform-url-signing-key",
            "AliasArn": "arn:aws:kms:us-east-1:000000000000:alias/some-nice-alias-name",
            "TargetKeyId": "<sameuuid>",
            "CreationDate": "2023-01-13T16:58:52.279782-05:00"
        }
    ]
}
```

however attempting to sign something does not work

```
# Make sure we can sign
aws-cli --endpoint-url=http://localhost:4566 kms sign \
  --cli-binary-format raw-in-base64-out \
  --key-id "alias/some-nice-alias-name" \
  --message 'wwwtestcom' \
  --message-type RAW \
  --signing-algorithm "RSASSA_PSS_SHA_512"
 
```
  
results in 

An error occurred (NotFoundException) when calling the Sign operation: Unable to find KMS alias with name alias/some-nice-alias-name


### Expected Behavior

Would expect output from the last command not the resulting error.

### 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 run localstack/localstack

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

```
aws-cli --endpoint-url=http://localhost:4566 kms create-key \
  --key-usage SIGN_VERIFY \
  --key-spec RSA_4096 


aws-cli --endpoint-url=http://localhost:4566 kms create-alias \
  --alias-name "some-nice-alias-name" \
  --target-key-id <key id generated above>

aws-cli --endpoint-url=http://localhost:4566 kms list-keys
{
    "Keys": [
        {
            "KeyId": "f7d2d869-f6b8-4977-96ea-5bd70cb0d5f2",
            "KeyArn": "arn:aws:kms:us-east-1:000000000000:key/<someuuid>"
        }
    ]
}

 aws-cli --endpoint-url=http://localhost:4566 kms list-aliases
{
    "Aliases": [
        {
            "AliasName": "census-webform-url-signing-key",
            "AliasArn": "arn:aws:kms:us-east-1:000000000000:alias/some-nice-alias-name",
            "TargetKeyId": "<sameuuid>",
            "CreationDate": "2023-01-13T16:58:52.279782-05:00"
        }
    ]
}

aws-cli --endpoint-url=http://localhost:4566 kms sign \
  --cli-binary-format raw-in-base64-out \
  --key-id "alias/some-nice-alias-name" \
  --message 'wwwtestcom' \
  --message-type RAW \
  --signing-algorithm "RSASSA_PSS_SHA_512"
```


### Environment

```markdown
- OS: Macos 12.6.2
- LocalStack: latest docker image
```


### Anything else?

I did test using the same using the actual generated key ID and this works. I also attempted this through a BOTO3 client in python and the same resulted. 
GenerateRandomRequest,
    GenerateRandomResponse,
    GetKeyPolicyRequest,
    GetKeyPolicyResponse,
    GetKeyRotationStatusRequest,
    GetKeyRotationStatusResponse,
    GetParametersForImportResponse,
    GetPublicKeyResponse,
    GrantIdType,
    GrantTokenList,
    GrantTokenType,
    ImportKeyMaterialResponse,
    InvalidCiphertextException,
    InvalidGrantIdException,
    InvalidKeyUsageException,
    KeyIdType,
    KeyState,
    KmsApi,
    KMSInvalidStateException,
    LimitType,
    ListAliasesResponse,
    ListGrantsRequest,
    ListGrantsResponse,
    ListKeyPoliciesRequest,
    ListKeyPoliciesResponse,
    ListKeysRequest,
    ListKeysResponse,
    ListResourceTagsRequest,
    ListResourceTagsResponse,
    MarkerType,