NSFS | NC | fix list-objecs-versions issues

[nadavMiz]

Explain the changes

1. change _get_object_list to return version id in suspended mode, causing list-object-versions to return version-id in suspended mode as well
2. set isLatest flags for objects in the main bucket folder and not in .version
3. add special case to check if delete marker is the latest version by checking if its the most recent entry of the key

Issues: Fixed #7372

Testing Instructions:

1. sudo NC_CORETEST=true node ./node_modules/mocha/bin/mocha src/test/unit_tests/test_bucketspace.js

• Doc added/updated
• Tests added

[rkomandu]

is this backported to 4.17 , in noobaa d/s 0904, this one is still a problem ""IsLatest": true"

[romayalon]

@rkomandu it was backported on 0904, so no, it's not there...