[clang] [clang][CodeGen] Do not try to emit definition of variable whose initializer contains errors (PR #131278)

[Younan Zhang via cfe-commits]

zyn0217 wrote:

Note that doing so might also hide those similar bugs where we accidentally make RecoveryExpr into CodeGen. So I don't know if this is on the right track

https://github.com/llvm/llvm-project/pull/131278