chore: release 5.6.1-at modal detecting utils

[rohitsahu-bstack]

<< Describe the changes >>

Closes:

[Copilot]

Pull Request Overview

This PR adds modal detection utilities to the core utils module as part of a 5.6.1-at release. The changes introduce functionality to detect modal dialogs on a webpage using both definitive modal attributes and heuristic-based detection for elements that appear modal-like.

• Adds two new utility functions for modal detection: detectModalStack and getOverlayFromStack
• Implements both definitive modal detection (via ARIA attributes and dialog elements) and heuristic detection (based on element size and positioning)
• Exports the new utilities through the main utils index file

Reviewed Changes

Copilot reviewed 3 out of 3 changed files in this pull request and generated 2 comments.

File	Description
lib/core/utils/index.js	Exports the two new modal detection utilities
lib/core/utils/detect-modal-stack.js	Main modal detection function that finds both definitive and potential modals
lib/core/utils/get-overlay-from-stack.js	Helper function to check if an element appears to be a modal overlay based on size and positioning

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