[clang] [clang][bytecode] Disallow reading from non-constant, array-typed `CompoundLiteralExpr`s (PR #195675)

[Eli Friedman via cfe-commits]

https://github.com/efriedma-quic approved this pull request.

LGTM

The way we represent compound literals in this context is pretty ugly... we should probably fix that at some point.  (Maybe along with implementing C23 compound literals.)

https://github.com/llvm/llvm-project/pull/195675