hide CW-ed featured notes on welcome page - fixes #458

What does this PR do?

As the title says.

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packages/frontend/src/pages/welcome.timeline.vue

@@ -40,7 +40,7 @@ const isScrolling = ref(false);
 const scrollEl = shallowRef<HTMLElement>();
 
 misskeyApiGet('notes/featured').then(_notes => {
-	notes.value = _notes;
+	notes.value = _notes.filter(n => n.cw == null);
 });
 
 onUpdated(() => {