Implement Configurable Theme Inheritance for Dragged Items #8165
Description
When dragging items between different browser windows (apps) that may have different themes (e.g., Dark Mode vs Light Mode), we need a configurable strategy for how the dragged item appears.
Goal:
Implement a themeMode config (e.g., 'adapt' | 'retain') on the Draggable/SortZone definition.
- Adapt: The item temporarily or permanently adopts the CSS variables/theme of the target window context.
- Retain: The item enforces its original theme (useful for "stickers" or branding).
Current Behavior:
The proxy clones the DOM/VDOM, likely carrying over classes, but if CSS variables are missing in the target, it may look broken.