[Modules] Record side effect info in EvaluatedStmt#11022

hnrklssn wants to merge 3 commits intoswiftlang:stable/20240723swiftlang/llvm-project:stable/20240723from

hnrklssn:fix-vardecl-init-serialization-frhnrklssn/llvm-project:fix-vardecl-init-serialization-frCopy head branch name to clipboard