Remove Contact Slowdown when Weightless or in the Air (#33299)

Remove Contact Slowdown when Weightless or in the Air (#33299)

* removed contact slowdowns from entities that are weightless or in the air

* fixed kudzu not applying contact slowdown to airbone entities

* revert kudzu fix

* reimplemented kudzu fix with bool datafield

* update variable serialization format

Co-authored-by: Ed <96445749+TheShuEd@users.noreply.github.com>
* empty commit

* cleaned up and added documentation

* cached airborne check

* rerun tests

* minor review

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Co-authored-by: Ed <96445749+TheShuEd@users.noreply.github.com>
Co-authored-by: Milon <milonpl.git@proton.me>