Tar: set directory modification times while extracting. (#88231)

Tar: set directory modification times while extracting. (#88231)

* Tar: set directory modification times while extracting.

* Extend test and change entry write order.

* Get rid of some enumeration allocations.

* test: check DateTime using InRange.

* Extend comment explaining the order of entries.

* Apply suggestions from code review

Co-authored-by: Dan Moseley <danmose@microsoft.com>
* Try including AltDirectorySeparatorChar.

* Revert "Try including AltDirectorySeparatorChar."

This reverts commit 086aac43a897826394156692bd82f79feb3eca9d.

* Try using Directory.SetLastWriteTime instead of File's.

* Tie up some ends.

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Co-authored-by: Dan Moseley <danmose@microsoft.com>