Pills performance improvements (#1891)

* big performance improvement for pills

* small overall performance improvement

* code improvements

ElementX/Sources/Screens/RoomScreen/RoomScreenViewModel.swift

@@ -925,3 +925,16 @@ private struct ReplyInfo {
     let type: EventBasedMessageTimelineItemContentType
     let isThread: Bool
 }
+
+private struct RoomContextKey: EnvironmentKey {
+    @MainActor
+    static let defaultValue = RoomScreenViewModel.mock.context
+}
+
+extension EnvironmentValues {
+    /// Used to access and inject and access the room context without observing it
+    var roomContext: RoomScreenViewModel.Context {
+        get { self[RoomContextKey.self] }
+        set { self[RoomContextKey.self] = newValue }
+    }
+}

ElementX/Sources/Screens/RoomScreen/View/Timeline/TimelineTableViewController.swift

@@ -163,6 +163,7 @@ class TimelineTableViewController: UIViewController {
                     .id(id)
                     .frame(maxWidth: .infinity, alignment: .leading)
                     .environmentObject(coordinator.context) // Attempted fix at a crash in TimelineItemContextMenu
+                    .environment(\.roomContext, coordinator.context)
             }
             .margins(.all, self.timelineStyle.rowInsets)
             .minSize(height: 1)