fix borrowed props with temp values

packages/core/src/properties.rs

@@ -79,4 +79,5 @@ pub fn fc_to_builder<'a, T: Properties + 'a>(_: fn(Scope<'a, T>) -> Element<'a>)
 fn unsafe_props_fail() {
     let t = trybuild::TestCases::new();
     t.compile_fail("compile_tests/props_safety.rs");
+    t.compile_fail("compile_tests/props_safety_temporary_values.rs");
 }

packages/core/src/scopes.rs

@@ -424,7 +424,9 @@ impl<'src> ScopeState {
         fn_name: &'static str,
     ) -> DynamicNode<'src>
     where
-        P: Properties + 'child,
+        // The properties must be valid until the next bump frame
+        P: Properties + 'src,
+        // The current bump allocator frame must outlive the child's borrowed props
         'src: 'child,
     {
         let vcomp = VProps::new(component, P::memoize, props);