Crash when changing sorting on Android

[opatry]

Describe the bug
Crash when sorting list which contains tasks with no due date.

To Reproduce
Steps to reproduce the behavior:

1. Have a list with few tasks, including some without due date
2. Sort by due date

Expected behavior
Sorting properly applied and not crash.

Screenshots
If applicable, add screenshots to help explain your problem.

Tip

🔥 Firebase crash

Fatal Exception: java.lang.IllegalArgumentException: Type of the key None is not supported. On Android you can only use types which can be stored inside the Bundle.
       at androidx.compose.runtime.saveable.SaveableStateHolderImpl.SaveableStateProvider(SaveableStateHolder.kt:79)
       at androidx.compose.foundation.lazy.layout.LazySaveableStateHolder.SaveableStateProvider(LazySaveableStateHolder.kt:85)