Inheritance in cyclonedds-python not working properly after last commits in the master

Hello,

After downloading the master of cyclonedss and cyclonedds-python, and test structs' inheritance, subscriber is not receiving any message.

If you test with the next IDL:

module module_test {
    struct parent {
        char var;
    };
    struct child : parent {
        char var2;
    };
};

And subscriber tries to receive messages from parent, it works properly, but it is not able to receive messages from child.

It seems that the changes done by @thijsmie on issue #162 solved the problem, but commits from the last days have caused the problem.

Best regards.

Start by reproducing the issue with the parent and child IDL shown in the report, using a subscriber that receives parent messages. Compare behavior with the recent master commits mentioned in the issue. Done means messages published as child instances are received through the parent subscriber as expected.