[Snap Core24] Unnecessary .desktop file created

We noticed an unnecessary (duplicate or wrong) .desktop file created while building Obsidian Snap package.

Our setup is electron builder 26.15.7, core24, classic confinement, `syncDesktopName: true`, and `desktopName: md.obsidian.Obsidian`

Two .desktop files were generated (so there are two items in the user's app launcher).

`md.obsidian.Obsidian.desktop`
`obsidian.desktop`

We were expecting only the first one, not the second.
They have the same content.

```
[Desktop Entry]
Name=Obsidian
Exec=obsidian %U
Terminal=false
Type=Application
Icon=${SNAP}/meta/gui/icon.png
StartupWMClass=md.obsidian.Obsidian
Comment=Obsidian
MimeType=x-scheme-handler/obsidian;
Categories=Office;
```

Start by reproducing the Snap package with electron-builder 26.15.7, core24, classic confinement, syncDesktopName enabled, and desktopName set to md.obsidian.Obsidian. Compare the generated md.obsidian.Obsidian.desktop and obsidian.desktop files; done means only the expected desktop file is produced with the reported configuration.

Written by the indexing model from the issue text.