fix: Fade out navigation when editing and mouse hasn't moved (#3256)

* fix: hide header when editing

* fix: settings collab switch

* Update app/hooks/useMouseMove.ts

Co-authored-by: Tom Moor <tom.moor@gmail.com>

* fix: accept timeout parameter

* fix: don't hide observing banner

* fix: hide on focused and observing

* perf: memo

* hide References too

Co-authored-by: Tom Moor <tom.moor@gmail.com>

app/editor/components/EmojiMenu.tsx

@@ -21,7 +21,7 @@ const searcher = new FuzzySearch<{
   sort: true,
 });
 
-class EmojiMenu extends React.Component<
+class EmojiMenu extends React.PureComponent<
   Omit<
     Props<Emoji>,
     | "renderMenuItem"