fix: prevent ExpandableOverlay onDismiss callback from being called twice

[adids1221]

Description

Fixes an issue where the onDismiss callback passed via modalProps or dialogProps was being called twice when the overlay was dismissed.

The issue occurred because closeExpandable was being triggered from multiple sources:

1. From onBackgroundPress / onRequestClose when user dismissed the modal
2. From React Native Modal's internal onDismiss callback

Added a new dismissOverlay function that only closes the UI without calling the user's callback. Modal's onDismiss now uses dismissOverlay, while onBackgroundPress and onRequestClose continue to use closeExpandable.

Verified that components using ExpandableOverlay are not affected:

• Picker - all tests pass
• DateTimePicker - all tests pass

Changelog

ExpandableOverlay - Fixed onDismiss callback being called twice when modal is dismissed.

Additional info

MADS-4656
Old PR (Closed because of conflicts, all the comments there are fixed here)

[github-actions]

✅ PR Description Validation Passed

All required sections are properly filled out:

• ✅ Description
• ✅ Changelog
• ✅ Additional info

Your PR is good for review! 🚀

---

This validation ensures all sections from the PR template are properly filled.

[adids1221]

TODO: check on private repo

[M-i-k-e-l]

TODO: check on private repo

Did you test it?

[adids1221]

TODO: check on private repo

Did you test it?

It's in my task list, but I can't build private version with the current builds issue.

[adids1221]

Hi @M-i-k-e-l,
Verified in private repo using snapshot 8.2.2-snapshot.7711
Tested components that use ExpandableOverlay:

• Picker - onDismiss called once ✅
• ActionSheet - onDismiss called once ✅
• TimePicker - value reset on dismiss ✅
• DatePicker - value reset on dismiss ✅
• DurationPicker - value reset on dismiss ✅

Tested scenarios:

• Background tap dismiss
• Selection dismiss

No regressions found.

[M-i-k-e-l]

You will need to update private and make sure tests pass there