[ADT] Group public functions in DenseMap.h (NFC)#168239

kazutakahirata merged 1 commit intollvm:mainllvm/llvm-project:mainfrom

kazutakahirata:cleanup_20251115a_ADT_DenseMap_groupkazutakahirata/llvm-project:cleanup_20251115a_ADT_DenseMap_groupCopy head branch name to clipboard