Add From for Hashed (#21690)

# Objective

- Calling `Hashed::new` could be annoying if a function accepts it.

## Solution

- Add `From` impl to allow creating functions that accepts `impl
From<V>`.

Author: Shatur

crates/bevy_platform/src/hash.rs

@@ -66,6 +66,12 @@ impl<V, H> Hash for Hashed<V, H> {
     }
 }
 
+impl<V: Hash, H: BuildHasher + Default> From<V> for Hashed<V, H> {
+    fn from(value: V) -> Self {
+        Self::new(value)
+    }
+}
+
 impl<V, H> Deref for Hashed<V, H> {
     type Target = V;