`<mdspan>`: Cleanup for `_CONSTEVAL`#3638

Merged

StephanTLavavej merged 2 commits intomicrosoft:feature/mdspan2from

frederick-vs-ja:mdspan-consteval

May 24, 2023

Commits on Apr 8, 2023

`<mdspan>`: Cleanup for `_CONSTEVAL`
frederick-vs-ja
authored

Commits on May 18, 2023

Merge remote-tracking branch 'origin/feature/mdspan2' into mdspan-consteval
frederick-vs-ja
committed