[clang] [analyzer] Fix crash in PaddingChecker on dependent field types (PR #232986)

[Balázs Benics via cfe-commits]

https://github.com/steakhal commented:

This was an interesting issue. Thanks. The discussion was also helpful.
Thank you all for sticking around!

Unless there is urgency - I'd prefer a Sema fix over a workaround.
I can also understand that crashing is not really a good outcome while waiting on the proper fix - so this is why I'm asking. Would it work for you all to wait some?

https://github.com/llvm/llvm-project/pull/232986