### 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_
file = tmpdir / f"test-file-{short_uid()}.bin"
            data = b"1" * (size_in_kb * KB)
            file.write(data=data, mode="w")
            aws_client.s3.upload_file(
                Bucket=s3_bucket,
                Key=key,
                Filename=str(file.realpath()),
                ExtraArgs={"StorageClass": "DEEP_ARCHIVE"},
                Config=transfer_config,
            )
        upload_file(1)
        upload_file(9)
        upload_file(15)
        s = s3_resource.Bucket(s3_bucket).s.all()
        keys = []
        for obj in s:
            keys.append(obj.key)
            assert obj.storage_class == "DEEP_ARCHIVE"
    @pytest.mark.aws_validated
    @pytest.mark.skip_snapshot_verify(
        condition=is_old_provider,
        paths=[
            "$..Error.Message",  # TODO 
            "$..Error.RequestID",  # AWS 
            "$..Error.StorageClass",  # Miss
            "$..StorageClass",  # Miss
        ],
    )
    def test_s3_get_deep_archive__restore(self, s3_create_bucket, snapshot, aws_client):