Don't eat keys (#2280)

packages/autofmt/tests/samples/complex.rsx

@@ -48,6 +48,21 @@ rsx! {
         }
     }
 
+    for i in 0..10 {
+        Component { key: "{i}", blah: 120 }
+    }
+    for i in 0..10 {
+        Component { key: "{i}" }
+    }
+
+    for i in 0..10 {
+        div { key: "{i}", blah: 120 }
+    }
+
+    for i in 0..10 {
+        div { key: "{i}" }
+    }
+
     div {
         "asdbascasdbasd"
         "asbdasbdabsd"