TF-1862: Add ADR for ticket about how to use Draggable on the web

(cherry picked from commit 8e4f767625ee12a3290223beec5cdfc4cf141b9c)

docs/adr/0029-fix-show-widget-of-draggable-when-click-right-on-email.md

@@ -0,0 +1,49 @@
+# 29. Fix show widget of Draggable when click right on email
+
+Date: 2023-05-24
+
+## Status
+
+- Issue: [#1743](https://github.com/linagora/tmail-flutter/issues/1862)
+
+## Context
+
+When user click right on email, the feedback widget of Draggable will show.
+
+## Root cause
+
+The childWhenDragging widget will still be draggable, including the ability to trigger the right-click event. 
+This is because the childWhenDragging widget is a part of the draggable behavior and inherits the drag-related properties and behaviors from the Draggable widget.
+The Draggable widget allows you to customize the appearance and behavior of the dragged item during the dragging process by providing the feedback and childWhenDragging properties.
+The feedback widget is used to display a visual representation of the dragged item, while the childWhenDragging widget is used to replace the original item when it is being dragged.
+
+
+## Decision
+
+Wrap it with a GestureDetector and handle the right-click event as mentioned in the previous answer. This way, you can have separate behavior for the original item and the item being dragged.
+
+```
+    GestureDetector(
+      behavior: HitTestBehavior.translucent,
+      onSecondaryTapDown: (details) {
+        // 1. Use empty callback to disable D&D on mouse right button
+        // 2. Call `showMenu` to show context menu
+      },
+      child: Draggable<List<PresentationEmail>>(
+        data: controller.listEmailDrag,
+        feedback: _buildFeedBackWidget(context),
+        childWhenDragging: _buildEmailItemWhenDragging(context, presentationEmail),
+        dragAnchorStrategy: pointerDragAnchorStrategy,
+        onDragStarted: () {
+          controller.calculateDragValue(presentationEmail);
+          controller.onDragMailBox(true);
+        },
+        onDragEnd: (_) => controller.onDragMailBox(false),
+        onDraggableCanceled: (_,__) => controller.onDragMailBox(false),
+        child: _buildEmailItemNotDraggable(context, presentationEmail)
+      ),
+    );
+```
+## Consequences
+
+- Do not show the move dialog at all when I right click

lib/features/thread/presentation/thread_view.dart

@@ -360,10 +360,7 @@ class ThreadView extends GetWidget<ThreadController>
   Widget _buildEmailItemDraggable(BuildContext context, PresentationEmail presentationEmail) {
     return GestureDetector(
       behavior: HitTestBehavior.translucent,
-      onSecondaryTapDown: (details) {
+      onSecondaryTapDown: (_) {},
-        // 1. Use empty callback to disable D&D on mouse right button
-        // 2. Call `showMenu` to show context menu
-      },
       child: Draggable<List<PresentationEmail>>(
         data: controller.listEmailDrag,
         feedback: _buildFeedBackWidget(context),