fix: onLaunchedWithItems implementation to prevent information loss

[KernelDeimos]

[ai]

Fix for issue #1226: onLaunchedWithItems implementation to prevent information loss

This PR implements the solution suggested in issue #1226 to fix the problem with onLaunchedWithItems being prone to losing information about fsentries due to property duplication.

Changes:

1. Modified launch_app.js to only pass the file UUID to apps after granting the app permission to access the file:

   • Instead of passing all file properties through the URL query parameters, we now only pass the file UUID
   • This eliminates the property duplication issue and keeps the URL shorter

2. Updated UI.js to have onLaunchedWithItems fetch the file information via puter.js:

   • When an app is launched with a file, it now uses puter.fs.stat() to get the complete file information using the UUID
   • This ensures that all file properties are consistently retrieved from a single source

Benefits:

1. More robust approach that eliminates property duplication
2. Shorter URLs (avoids hitting URL length limits)
3. Apps get the most up-to-date file information
4. Consistent with how the rest of the system accesses file information

Fixes #1226

[KernelDeimos]

dupe issue created by AI for no reason