<flat_map>: Fix ordering in insertion and access control in construction - #4828

<flat_map>: Fix ordering in insertion and access control in construction#4828

Stephan T. Lavavej (StephanTLavavej) merged 3 commits into

microsoft:feature/flat_mapmicrosoft/STL:feature/flat_mapfrom

frederick-vs-ja:flat_map-insert-access-fixfrederick-vs-ja/STL:flat_map-insert-access-fixCopy head branch name to clipboard