Reactions - Design review tweaks (#1417)

* Design review tweaks

- truncate reactions as per spec
- add haptic feedback on reacting
- Remove all collapse/expand animations on reactions
- tweak reaction and summary padding
- Fix alignment of time on reaction summary view
- Made sure reaction summary button in horizontal scroller is on screen on appear
- update screenshots

* Update TimelineReactionsView.swift

* Remove dark add more button and check long rtl reactions

* Set colour of  templated add more button

* Fix padding and only inset from the bubble on the leading side as per designs

- Fix padding
- Only inset from the bubble on the leading side as per designs

* Update screenshots

* Fix line length warning.

ElementX/Sources/Other/Extensions/String.swift

@@ -78,3 +78,12 @@ extension String {
         return whiteSpaces + "\u{2800}"
     }
 }
+
+extension String {
+    func ellipsize(length: Int) -> String {
+        guard count > length else {
+            return self
+        }
+        return "\(prefix(length))…"
+    }
+}