[DomEvent] Implement Physical Anchor Verification for Delegation

Refactor Neo.manager.DomEvent.verifyDelegationPath to implement a simplified, robust "Physical Anchor" verification strategy.

Context: Previous iterations considered complex VNode traversals to bridge the gap between physical DOM paths and logical component hierarchies (e.g., Portals, Multi-Window). However, since DomEvent.fire() now utilizes ComponentManager.getParentPath() to resolve the full logical component chain before verification, we can rely on this pre-calculated truth.

The Problem: Delegation verification failed for detached components because the listener.vnodeId was not present in the raw physical event.path.

The Solution: Physical Anchor Verification We implemented a 2-phase strategy that bridges the physical and logical worlds without expensive VNode scans.

1. Phase 1: Physical Boundary Check (Fast Path)

   • Standard check: Is listener.vnodeId in the physical path?
   • If yes, the target is physically inside the listener. Valid.

2. Phase 2: Physical Anchor Verification (Logical Fallback)

   • If Phase 1 fails, we check the componentPath (logical chain).
   • We identify the "Anchor Component": The first component ID in componentPath (which corresponds to the first component found in the physical path by getParentPath).
   • We verify that the targetId (found by the delegate selector) is physically inside (or is) this Anchor Component.
   • Logic: Target is inside Anchor (Physical) -> Anchor is inside Listener (Logical, via componentPath). Therefore, Target is inside Listener.

Benefits:

• Performance: O(N) on path length. No recursive VNode tree traversals.
• Robustness: Correctly handles Portals (Anchor = Portal Child), Menus (Anchor = SubMenu), and Multi-Window apps (Anchor = View in Window B).
• Simplicity: Leverages the existing "Single Source of Truth" (componentPath) rather than re-deriving relationships.

Changes:

• Updated src/manager/DomEvent.mjs.
• Added comprehensive tests in test/playwright/unit/manager/domEvent/Delegation.spec.mjs covering all scenarios.