Revert "Improve time handling in NeoChat"

This reverts commit 92c58b0ea0.

src/messagecontent/AuthorComponent.qml

@@ -27,9 +27,14 @@ RowLayout {
     required property var author
 
     /**
-     * @brief The timestamp of the event as a NeoChatDateTime.
+     * @brief The timestamp of the message.
      */
-    required property NeoChatDateTime dateTime
+    required property var time
+
+    /**
+     * @brief The timestamp of the message as a string.
+     */
+    required property string timeString
 
     Layout.fillWidth: true
     Layout.maximumWidth: Message.maxContentWidth
@@ -78,11 +83,11 @@ RowLayout {
     }
     QQC2.Label {
         id: timeLabel
-        text: root.dateTime.hourMinuteString
+        text: root.timeString
         horizontalAlignment: Text.AlignRight
         color: Kirigami.Theme.disabledTextColor
         QQC2.ToolTip.visible: timeHoverHandler.hovered
-        QQC2.ToolTip.text: root.dateTime.shortDateTime
+        QQC2.ToolTip.text: root.time.toLocaleString(Qt.locale(), Locale.ShortFormat)
         QQC2.ToolTip.delay: Kirigami.Units.toolTipDelay
 
         HoverHandler {