`IdentifierHiddenSharedQuery` broken on the `next` branch

[jketema]

We've made some improvements to getParentScope in the C/C++ QL library: github/codeql#17776

This has broken IdentifierHiddenSharedQuery on next: 2778d66. It's not fully clear to me what the query is supposed to achieve and how to fix it. Hence, I've just updated the expected test results.

[lcartey]

@jketema I believe this should be addressed (incidentally) by #813, which implements the desired behaviour for that query in preference to the default getParentScope behaviour.

[lcartey]

If you still see problems when you next merge main, let me know.