[clang] [lldb] [clang][lldb] Don't assert structure layout correctness for layouts provided by LLDB (PR #93809)

[Eli Friedman via cfe-commits]

efriedma-quic wrote:

Oh, in this particular case, the issue isn't the computed datasize, it's that FieldDecl::isZeroSize() returns the wrong result.  If that's the case, maybe we can just change FieldDecl::isZeroSize() to say the field is zero size?   So essentially, we pretend all empty fields are no_unique_address.  Nothing in codegen should care if we treat an non-zero-size empty field as if it's zero-size.

https://github.com/llvm/llvm-project/pull/93809