Function mutableStateMapOf 

pub fn mutableStateMapOf<K, V, I>(pairs: I) -> SnapshotStateMap<K, V>
where
    K: Clone + Eq + Hash + 'static,
    V: Clone + 'static,
    I: IntoIterator<Item = (K, V)>,

Creates a snapshot-aware map holding pairs. Must be called during composition. Compose’s mutableStateMapOf.