Fix Android 14+ limited permission deselection not notifying Flutter

[Copilot]

On Android 14+ with limited photo access (READ_MEDIA_VISUAL_USER_SELECTED), deselecting photos via presentLimited() doesn't notify the Flutter layer, even though MediaStore updates correctly.

Changes

• Added onLimitedSelectionChanged() callback to PermissionsListener: Default implementation ensures backward compatibility
• Modified PermissionDelegate34.handlePermissionResult(): Invokes callback when CODE_REQUEST_LIMITED completes
• Implemented callback in PhotoManagerPlugin: Sends change notification via existing notifyChannel to trigger Flutter listeners

Effect

Apps using PhotoManager.addChangeCallback() now receive notifications when users modify their limited photo selection:

PhotoManager.addChangeCallback((call) {
  if (call.method == 'change') {
    // Now triggered when presentLimited() completes with selection changes
    refreshAssetList();
  }
});

await PhotoManager.presentLimited();  // User deselects photos -> callback fires

Testing

Requires Android 14+ device with limited photo permission to verify deselection triggers Flutter callbacks.

Original prompt

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This section details on the original issue you should resolve

<issue_title>[Bug report] 受限权限时选择部分图片视频，只能增加不能反减</issue_title>
<issue_description>### Version

3.7.2

Platforms

Android

Device Model

Meizu 21

flutter info

部分选择相册时，反选不生效，从android日志都能看出cursor的反选是生效的，但flutter层还是只增不减

How to reproduce?

比如：先选两个图，再打开系统选择，只选择一个，flutter层依然保持两个

Logs

Example code (optional)

Contact

No response</issue_description>

Comments on the Issue (you are @copilot in this section)

@fluttercandies-dev **AI Summary:** 用户报告Android端选择图片/视频时，反选功能失效，导致只能增加选择，无法减少已选内容。即使底层数据正确，Flutter层也未正确反映反选操作。

Custom agent used: PR Agent
An Agent that helps to implement features and fixes based on issues.

• Fixes [Bug report] 受限权限时选择部分图片视频，只能增加不能反减 #1302

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