feat(notification): add Android chronometer support

[Et3rnel]

Summary

• add Android chronometer support to notification payload via when, usesChronometer, and chronometerCountDown
• wire new fields across guest JS options, Rust NotificationData/builder API, and Android notification builder/model
• include a .changes entry with matching minor:feat bumps for both Rust and JS notification packages

Motivation

• enable native elapsed/countdown timer notifications for Android use cases like time tracking and ongoing timers

Platform behavior

• Android: maps fields to notification chronometer APIs
• non-Android: fields are ignored and keep current behavior

What it looks like:

Closes #3279

[github-actions]

Package Changes Through ad4491d

There are 9 changes which include deep-link with patch, deep-link-js with patch, notification with minor, notification-js with minor, shell with minor, shell-js with minor, single-instance with patch, updater with patch, updater-js with patch

Planned Package Versions

The following package releases are the planned based on the context of changes in this pull request.

package	current	next
api-example	2.0.56	2.0.57
api-example-js	2.0.52	2.0.53
deep-link-example-js	2.2.17	2.2.18
deep-link	2.6.2	2.6.3
deep-link-js	2.6.2	2.6.3
notification	2.7.0	2.8.0
notification-js	2.7.0	2.8.0
shell	2.5.0	2.6.0
shell-js	2.5.0	2.6.0
single-instance	2.5.4	2.5.5
updater	2.14.0	2.14.1
updater-js	2.14.0	2.14.1

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