Allow displaying only unread notifications (#7803)

* Allow displaying only unread notifications

Add `FeatureFlags.ShowAllActivityInRoomList` (enabled by default, to match the current behavior) that, when disabled, will display the unread messages of a room instead of unread notifications if no unread notifications are found

* Restore UI changes to the badges, `RoomSummaryRow` and `HorizontalFloatingToolbar`

* Fix `NavigationBarIcon`: use `BadgeBox` component.

* Adjust padding in `RoomSummaryRow` to 6.dp

* Fix other indicators not displaying a dot anymore

* Update screenshots

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Co-authored-by: ElementBot <android@element.io>

libraries/matrixui/src/main/kotlin/io/element/android/libraries/matrix/ui/components/SpaceRoomItemView.kt

@@ -169,7 +169,8 @@ private fun NameAndIndicatorRow(
         )
         if (showIndicator) {
             UnreadIndicatorAtom(
-                color = ElementTheme.colors.unreadIndicator
+                color = ElementTheme.colors.unreadIndicator,
+                count = 0,
             )
         }
     }