fix long press snapshot of messages

Session/Conversations/ConversationVC+Interaction.swift

@@ -649,7 +649,7 @@ extension ConversationVC:
                 .elements
                 .firstIndex(of: cellViewModel),
             let cell = tableView.cellForRow(at: IndexPath(row: index, section: sectionIndex)) as? VisibleMessageCell,
-            let snapshot = cell.bubbleView.snapshotView(afterScreenUpdates: false),
+            let snapshot = cell.snContentView.snapshotView(afterScreenUpdates: false),
             contextMenuWindow == nil,
             let actions: [ContextMenuVC.Action] = ContextMenuVC.actions(
                 for: cellViewModel,

Session/Conversations/Message Cells/VisibleMessageCell.swift

@@ -79,7 +79,7 @@ final class VisibleMessageCell: MessageCell, UITextViewDelegate, BodyTextViewDel
         return result
     }()
 
-    private lazy var snContentView: UIStackView = {
+    lazy var snContentView: UIStackView = {
         let result = UIStackView(arrangedSubviews: [])
         result.axis = .vertical
         result.spacing = Values.verySmallSpacing