Crash when dragging-and-dropping file with accented characters (é, è, ç) for upload

**Environment:**
- OS: Kubuntu 25.1
- Installation Method: Flatpak through KDE Disocver store
- Edge Version: 144.0.3719.115 (happened with older versions too)
- KDE Plasma Version: 6.4.5
- Qt Version: 6.9.2

**Bug Description:**
Microsoft Edge crashes 100% of the time when I drag a file from the Dolphin file manager into any webpage's file upload area (e.g., an email attachment field), if the file's name contains accented characters like é, è, à, ç etc. this doesn't happen with other browsers like Firefox

**Steps to Reproduce:**
1. Open Microsoft Edge (Flatpak version).
2. Navigate to any website with a file upload form (e.g., Gmail, test virus etc.).
3. In the file manager (Dolphin), create a new text file and name it with an accent, for example: é_ééc.txt.
4. Drag this file from Dolphin and drop it onto the file upload area in the browser.
5. Observe that Edge immediately crashes.

**Expected Behavior:**
The file should be accepted and added to the upload queue without the browser crashing.

**Actual Behavior:**
The browser window closes abruptly (crashes) the moment the file is dropped.

**Additional Context:**
The crash does not occur with Firefox.
The crash occurs even when running Edge from the terminal with flatpak run com.microsoft.Edge.
Setting the environment variable LANG=en_US.UTF-8 does not prevent the crash.
I have tested this with multiple files and different accents, and the crash is 100% reproducible.