Better list empty state (#7157)

* render header conditionally, use modern footer

* move add button to empty state if empty

* center align empty state

* Tweak add people btn

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Co-authored-by: Paul Frazee <pfrazee@gmail.com>

src/view/com/util/EmptyState.tsx

@@ -26,9 +26,7 @@ export function EmptyState({
   const {isTabletOrDesktop} = useWebMediaQueries()
   const iconSize = isTabletOrDesktop ? 64 : 48
   return (
-    <View
-      testID={testID}
-      style={[isTabletOrDesktop && {paddingRight: 20}, style]}>
+    <View testID={testID} style={style}>
       <View
         style={[
           styles.iconContainer,