replace fxhash crate with rustc-hash (#588)

packages/native-core/src/real_dom.rs

@@ -1,5 +1,5 @@
 use anymap::AnyMap;
-use fxhash::{FxHashMap, FxHashSet};
+use rustc_hash::{FxHashMap, FxHashSet};
 use std::ops::{Index, IndexMut};
 
 use dioxus_core::{

packages/native-core/src/state.rs

@@ -2,7 +2,7 @@ use std::{cmp::Ordering, fmt::Debug};
 
 use anymap::AnyMap;
 use dioxus_core::GlobalNodeId;
-use fxhash::FxHashSet;
+use rustc_hash::FxHashSet;
 
 use crate::node_ref::{NodeMask, NodeView};
 use crate::real_dom::NodeData;