Fixes #2679 - Timestamps in room list inconsistently use absolute and relative formatting

ElementX/Sources/Other/Extensions/Date.swift

@@ -26,7 +26,8 @@ extension Date {
             return formatted(date: .omitted, time: .shortened)
         } else if calendar.isDateInYesterday(self) {
             // Simply "Yesterday" if it was yesterday.
-            return formatted(Date.RelativeFormatStyle(presentation: .named, capitalizationContext: .beginningOfSentence))
+            guard let yesterday = Calendar.current.date(byAdding: .day, value: -1, to: Date()) else { fatalError() }
+            return yesterday.formatted(Date.RelativeFormatStyle(presentation: .named, capitalizationContext: .beginningOfSentence))
         } else if let sixDaysAgo = calendar.date(byAdding: .day, value: -6, to: calendar.startOfDay(for: .now)),
                   sixDaysAgo <= self {
             // The named day if it was in the last 6 days.

ElementX/Sources/Services/Timeline/TimelineItems/RoomTimelineItemFactory.swift

@@ -484,7 +484,7 @@ struct RoomTimelineItemFactory: RoomTimelineItemFactoryProtocol {
                 return firstTimestamp > secondTimestamp
             }
             .map { key, receipt in
-                ReadReceipt(userID: key, formattedTimestamp: receipt.dateTimestamp?.formatted(date: .omitted, time: .shortened))
+                ReadReceipt(userID: key, formattedTimestamp: receipt.dateTimestamp?.formattedMinimal())
             }
     }