[clang] [analyzer] Don't copy field-by-field conjured LazyCompoundVals (2/4) (PR #115917)

[Donát Nagy via cfe-commits]

https://github.com/NagyDonat approved this pull request.

Overall LGTM, I added a few minor inline comments, but they are not blocking issues.

https://github.com/llvm/llvm-project/pull/115917