Refactor delegates and improve context menu opening

This unifies the context menu opening and makes sure that clicking *anywhere* on the delegate opens the context menu, not just on the content

imports/NeoChat/Component/Timeline/VideoDelegate.qml

@@ -26,6 +26,8 @@ TimelineContainer {
     property bool supportStreaming: true
     readonly property int maxWidth: 1000 // TODO messageListView.width
 
+    onOpenContextMenu: openFileContext(model, vid)
+
     onDownloadedChanged: {
         if (downloaded) {
             vid.source = progressInfo.localPath
@@ -121,16 +123,6 @@ TimelineContainer {
                 videoDelegate.downloadAndPlay()
             }
         }
-
-        TapHandler {
-            acceptedButtons: Qt.RightButton
-            onTapped: openFileContext(model, parent)
-        }
-
-        TapHandler {
-            acceptedButtons: Qt.LeftButton
-            onLongPressed: openFileContext(model, parent)
-        }
     }
 
     function downloadAndPlay() {