[BUG] Copying files over MTP starts to fail when a file is over a couple of Megabyte

[Zakadius123]

Cosmic-files version:
0.1.0172964584224.04~576b9ef

Issue/Bug description:
Copying files over a certain size will start to fail when transferring over MTP. During testing I found that it starts at around 5.5MB but isn't consistent at around 1/5. Going to higher sizes like 6MB will cause it to fail more often.

This was tested with a Pixel 6 and a Steam Deck. For my Steam Deck I could transfer a file at around 6MB with no issues but had issues with one over 8MB.

Steps to reproduce:

1. Connect any device over MTP to the PC (In my case a Pixel 6)
2. Allow file transfer.
3. Attempt to transfer a file over ~6MB

Expected behavior:
User is able to transfer files of any sizes to their devices over MTP.

Other notes:
Replacing the file seem to allow me to transfer the entire file even those over 100MB.

dd if=/dev/zero of=upload_test bs=1K count=SIZE_OF_FILE was used to create files with different sizes.