### Is there an existing issue for this?

- [X] I have searched the existing issues

### Current Behavior

Note: I create this bug as I didn't get an answer in another related [issue](https://github.com/localstack/localstack/issues/98#issuecomment-929993979) (#98).

After restarting localstorage, when I do a S3 getObject of a file, it gives me the file with some extra chunk-signature data. Example: 
```json
1e5;chunk-signature=83a45ce7e9db52171538036b946102068a9f2005c53049b23c63515f1c048fbc
{ "test": "this is a test json" }
0;chunk-signature=bd812928970799e2d5d16a86900629155d7d38aba42ed2dcbc7d6559c364671f
```

### Expected Behavior

The behaviour expected is getting the object without the extra chunk-signature data as it breaks parsing the file after.

### How are you starting LocalStack?

With a docker-compose file

### Steps To Reproduce

In order to easily reproduce this bug, I've created a [repository](https://github.com/herrlegno/localstack-s3-signature-error).

# Steps:
* Create a s3 bucket named: test
* Run 1º test (the one with (Order(1) decorator)
* After the test has successfully passed, restart the localstack container.
* Run only the "extendsS3Object" (Order(2) decorator) test or download the file "test.json" from s3 through awscli.

The file will look like something like this:
```json
19;chunk-signature=f64cba77c6523187a1448fd7bd9cd739ce9d953c951af6fe34ac787b8b8f60d6
{"foo":"bar"}
0;chunk-signature=fcc672670aab469d7e23cd6eeea9cb5639feca2f065510bcfb77f057bb391c9b
```


### Environment

```markdown
- OS: Pengwin WSL (but also tried in a native ubuntu 20.10)
- LocalStack: latest
- AWS Java S3 Client: 1.11.73
```


### Anything else?

_No response_
return OBJECT_EXPIRY.get(path)
def add_response_metadata_headers(response):
    if response.headers.get("content-language") is None:
        response.headers["content-language"] = "en-US"
def append_last_modified_headers(response, content=None):
    """Add Last-Modified header with current time
    (if the response content is an XML containing <LastModified>, add that instead)"""
    time_format = "%a, %d %b %Y %H:%M:%S GMT"  
    try:
        if content:
            last_modified_str = re.findall(r"<LastModified>([^<]*)</LastModified>", content)
            if last_modified_str:
                last_modified_str = last_modified_str[0]
                last_modified_time_format = dateutil.parser.parse(last_modified_str).strftime(
                    time_format
                )
                response.headers["Last-Modified"] = last_modified_time_format
    except TypeError as err:
        LOGGER.debug("No parsable content: %s" % err)
    except ValueError as err:
        LOGGER.error("Failed to parse LastModified: %s" % err)
    except Exception as err:
        LOGGER.error("Caught generic exception (parsing LastModified): %s" % err)
    
    try:
        if response.headers.get("Last-Modified", "") == "":
            response.headers["Last-Modified"] = datetime.datetime.now().strftime(time_format)
    except Exception as err:
        LOGGER.error("Caught generic exception (setting LastModified header): %s" % err)
def append_list_objects_marker(method, path, data, response):