Jochen Görtler 49d4befe6b Store web_sys::File inside of DroppedFile (#8354) ...

* Closes #4654
* Related #4667
* [x] I have followed the instructions in the PR template

This PR avoids materializing the contents of a file that was dragged
into an egui application on the web. It does so by storing the
`web_sys::File` handle directly on WASM.

This breaks the existing API of `DroppedFile` on the web, because there
is no way to retrieve the bytes synchronously form a `DroppedFile`
anymore, forcing handling call sites to become asynchronous.

The native API remains the same.

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Co-authored-by: Emil Ernerfeldt <emil.ernerfeldt@gmail.com>

2026-08-03 15:07:37 +00:00

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