### Is there an existing issue for this?

- [X] I have searched the existing issues

### Current Behavior

CopyObject API does not check precondition headers such as `x-amz-copy-source-if-modified-since`. Instead it seems to always copy the object.

### Expected Behavior

The API should return a 412 response with content similar to:

```
<Error><Code>PreconditionFailed</Code><Message>At least one of the pre-conditions you specified did not hold</Message><Condition>x-amz-copy-source-If-Modified-Since</Condition><RequestId>14HR9PXJRG5B1GR5</RequestId><HostId>HztBs2jYea1fzzPWo1JWy33NQJqo1S1IsK62rkbnVEI04PnGNCi8sPVrichGQxH3FQwLA2RIyF4=</HostId></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 s3  --profile localstack --endpoint-url http://s3.localhost.localstack.cloud:4566 \
  ls s3://net-amazon-s3-test/Makefile.am
2023-01-25 10:47:40        537 Makefile.am

aws s3api copy-object --copy-source net-amazon-s3-test/Makefile.am --key Makefile.am.2 \
  --bucket net-amazon-s3-test2 --profile localstack --endpoint-url http://s3.localhost.localstack.cloud:4566 \
  --copy-source-if-modified-since "Wed, 25 Jan 2023 16:16:27 GMT"
{
    "CopyObjectResult": {
        "ETag": "\"46ada9d1fe8f8a311ff4504c226e061c\"",
        "LastModified": "2023-01-25T16:18:43+00:00"
    }
}
```

### Environment

```markdown
- OS: penguin
- LocalStack: latest
```


### Anything else?

_No response_
response = .get(download_url)
        assert response.status_code == 200
        assert to_str(response.content) == content
    @pytest.mark.only_localstack
    def test_s3_hostname_with_subdomain(self, aws_http_client_factory, aws_client):
        """
        This particular test validates the fix for localstack#7424
        Moto would still validate with the `host` header if buckets where subdomain based even though in the new ASF
        provider, every request was forwarded by the VirtualHost proxy.
        """
        s3_http_client = aws_http_client_factory("s3", signer_factory=SigV4Auth)
        endpoint_url = _endpoint_url()
        # this 
        resp = s3_http_client.get(endpoint_url)
        assert resp.ok
        assert resp.ok
        assert b"<Bucket" in resp.content
        # the 
        resp = s3_http_client.get(endpoint_url, headers={"host": "aws.test.local"})
        assert resp.ok
        assert b"<Bucket" in resp.content
    @pytest.mark.skip_offline
    @pytest.mark.aws_validated
    @pytest.mark.skip_snapshot_verify(condition=is_old_provider, paths=["$..AcceptRanges"])
    def test_s3_lambda_integration(
        self,
        create_lambda_function,
        lambda_su_role,
        s3_create_bucket,
        create_tmp_folder_lambda,