iOS. Reduce recompositions during keyboard showing

[igordmn]

Compose 1.6.0

When iOS keyboard appears, the whole app recomposes. It most probably happens because in https://github.com/JetBrains/compose-multiplatform-core/blob/jb-main/compose/ui/ui/src/uikitMain/kotlin/androidx/compose/ui/uikit/KeyboardOverlapHeight.uikit.kt#L27 staticCompositionLocalOf is used. staticCompositionLocalOf recomposes the whole UI tree every time it changes. As changing the height of the keyboard is an often thing, it is not a good thing to recompose everything.

If keyboard is animated, the whole app recomposes every frame.

The solution is to replace staticCompositionLocalOf by compositionLocalOf.

[igordmn]

Reported here #4434