[BUG] Missing Content Provider

[MC874]

Describe the bug / 描述一下这个错误 Apps that has ability to open / read files fails to read / import as there's no default content provider inside BlackBox if using Documents system app outside blackbox environment.

To Reproduce / 复现步骤 Steps to reproduce the behavior:

1. Find apps that has ability to import files.
2. Import a file and it will automaticly open default documents system apps from outside blackbox
3. See the error output or trough cat proc

1. Downoad, Install Minecraft into blackbox
2. From the game, create worlds and export to . mcworld file.
3. Now re-import worlds and it will automaticly use Any File Manager outside Blackbox
4. Fails to import as no content provider

Expected behavior / 预期的行为 Any apps that has ability to open config files can load config / read files normally using any File Manager outside BlackBox

Screenshots / 截图 Screenshot_2022-06-29-09-48-46-49

Mobile Phone Info / 手机信息 Oppo F7 / Android 10

Logcat / 日志

Additional context / 额外内容 Provide Default BlackBox File Manager would fix the issue, current Blackbox still attemp to import files from outer environment.

APK https://play.google.com/store/apps/details?id=com.mojang.minecraftpe