[mlir] Migrate away from {TypeRange,ValueRange}(std::nullopt) (NFC)#145445

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

kazutakahirata:cleanup_20250623_nullopt_mlir_ValueRange_TypeRangekazutakahirata/llvm-project:cleanup_20250623_nullopt_mlir_ValueRange_TypeRangeCopy head branch name to clipboard