List.all/any on list with unnecessary element simplifications

[lue-bird]

as hinted at in https://github.com/jfmengels/elm-review-simplify/pull/261#discussion_r1349564444

List.all identity [ a, True, b ]
--> List.all identity [ a, b ]

List.all not [ a, False, b ]
--> List.all not [ a, b ]

List.any identity [ a, False, b ]
--> List.any identity [ a, b ]

List.any not [ a, True, b ]
--> List.any not [ a, b ]

Bonus: Fixed a bug where List.filterMap with a non-identity function on a list with Nothing would remove the Nothing element.