### Is there an existing issue for this?

- [X] I have searched the existing issues

### Current Behavior

When updating from 0.14.1 to 0.14.2 it appears that the `KMS_PROVIDER` environment variable is no longer honored, and `local-kms` is not used.

### Expected Behavior

Setting `KMS_PROVIDER=local-kms` and using the KMS service should launch `local-kms` as it did previously.

### How are you starting LocalStack?

With a `docker run` command

### Steps To Reproduce

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

    docker run -e KMS_PROVIDER=local-kms localstack/localstack:0.14.1

    docker run -e KMS_PROVIDER=local-kms localstack/localstack:0.14.2

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

##### 0.14.1

    awslocal kms list-keys
    # {
    #     "Keys": []
    # }

    ps x|grep kms
    #   164 ?        Ss     0:00 /bin/sh -c /opt/code/localstack/localstack/infra/kms/local-kms.linux-arm64.bin
    #   165 ?        Sl     0:00 /opt/code/localstack/localstack/infra/kms/local-kms.linux-arm64.bin
    #   179 pts/0    S+     0:00 grep kms

##### 0.14.2

    awslocal kms list-keys
    # {
    #     "Keys": []
    # }

    ps x|grep kms
    #   151 pts/0    S+     0:00 grep kms


### Environment

```markdown
- OS: macOS 12.3
- LocalStack: 0.14.2
- Docker: 20.10.13, build a224086
```


### Anything else?

_No response_
from localstack.services.ec2.provider import Ec2Provider
    from localstack.services.moto import MotoFallbackDispatcher
    provider = Ec2Provider()
    return Service(
        "ec2",
        listener=AwsApiListener("ec2", MotoFallbackDispatcher(provider)),
    )
@aws_provider()
def es():
    from localstack.aws.proxy import AwsApiListener
    from localstack.services.es.provider import EsProvider
    provider = EsProvider()
    return Service("es", listener=AwsApiListener("es", provider))
@aws_provider()
def firehose():
    from localstack.aws.proxy import AwsApiListener
    from localstack.services.firehose.provider import FirehoseProvider
    provider = FirehoseProvider()
    return Service("firehose", listener=AwsApiListener("firehose", provider))
@aws_provider()
def iam():
    from localstack.services.iam import iam_listener, iam_starter
    return Service("iam", listener=iam_listener.UPDATE_IAM, start=iam_starter.start_iam)
@aws_provider()
def sts():
    from localstack.services.sts.provider import StsAwsApiListener
    listener = StsAwsApiListener()
    return Service("sts", listener=listener)
@aws_provider()
def kinesis():