[ADT] refactor MoveOnly type in ADT unittest (#94421)
context: https://github.com/llvm/llvm-project/pull/94151#pullrequestreview-2097098530
parent
c0bb16ea
context: https://github.com/llvm/llvm-project/pull/94151#pullrequestreview-2097098530
mentioned in commit c5dd10ba
·mentioned in commit c5dd10ba