Add concurrency detection for query, save changes, and ADO command execution

[mikary]

Changes for #3291
@divega @ajcvickers @AndriySvyryd @anpete

[mikary]

For Query, it was not necessary to add guards on the QueryCompiler for the single result path because the guard is already compiled into the query.

[AndriySvyryd]

Using the previous value when setting has more potential of ending up with an unexpected value in concurrency scenarios making this potentially less effective. Just use a bool and assign a constant

[ajcvickers]

Looks good to me once comments addressed.