[CIR] Implement DesignatedInitUpdateExpr for AggregateExpr#161897

AmrDeveloper merged 2 commits intollvm:mainllvm/llvm-project:mainfrom

AmrDeveloper:cir_designated_init_update_exprAmrDeveloper/llvm-project:cir_designated_init_update_exprCopy head branch name to clipboard