[Fix Requested] Add missing KDE session dbus permissions

[mtalexan]

KWallet isn't working even though VSCode is detecting when KDE is in use and trying to use it. This is traceable (see https://code.visualstudio.com/docs/editor/settings-sync#_troubleshooting-keychain-issues) to the missing Session DBus ("talk") permissions for:

• org.kde.KWallet.*
• and presumably (eventually) org.kde.kwalletd5

Like the gnome secret store Session DBus permissions, and the org.freedesktop.secretstore DBus permissions that are already built into the flatpak, these need to be as well.

[AnttiJalomaki]

This is still an issue in 2026. On KDE 6 (Fedora 43, KDE Plasma 6.x), the relevant D-Bus service is org.kde.kwalletd6, not kwalletd5.

Symptom: VS Code shows "You're running in a KDE environment but the OS keyring is not available for encryption. Ensure you have kwallet running." GitHub login doesn't persist across restarts.

Workaround: flatpak override --user --talk-name=org.kde.kwalletd6 com.visualstudio.code

The VSCodium Flatpak (com.vscodium.codium) already ships with org.kde.kwalletd5=talk in its manifest, but is also missing kwalletd6.

Opened a PR with the fix: #661