[FIX] config: make enableTransitions work on components (#773)

Fun: the transition is handled at two different places, once for dom
nodes, once for components.  Obviously, I only applied the change to the
first case and forgot about the second.

doc/reference/event_handling.md

@@ -85,8 +85,9 @@ Note that if you work with Typescript, the `trigger` method is generic on the ty
 You can then describe the type of the event, so you will see typing errors...
 
 ```typescript
-this.trigger<MyCustomPayload>('my-custom-event', payload);
+this.trigger<MyCustomPayload>("my-custom-event", payload);
 ```
+
 ```typescript
 myCustomEventHandler(ev: OwlEvent<MyCustomPayload>) { ... }
 ```

src/component/directive.ts

@@ -227,7 +227,9 @@ QWeb.addDirective({
       if (name.startsWith("t-on-")) {
         events.push([name, value]);
       } else if (name === "t-transition") {
+        if (QWeb.enableTransitions) {
           transition = value;
+        }
       } else if (!name.startsWith("t-")) {
         if (name !== "class" && name !== "style") {
           // this is a prop!