Fix Electron Quirks

[ProjectSynchro]

Fixes #5

This allows access to the Gnome secrets, libsecret and kwallet sockets which should allow electron safeStorage to function correctly.

[flathubbot]

Started test build 143310

[flathubbot]

Build 143310 successful
To test this build, install it from the testing repository:

flatpak install --user https://dl.flathub.org/build-repo/126365/app.ytmdesktop.ytmdesktop.flatpakref

[flathubbot]

Started test build 143319

[flathubbot]

Build 143319 successful
To test this build, install it from the testing repository:

flatpak install --user https://dl.flathub.org/build-repo/126375/app.ytmdesktop.ytmdesktop.flatpakref

[flathubbot]

Started test build 143335

[flathubbot]

Build 143335 successful
To test this build, install it from the testing repository:

flatpak install --user https://dl.flathub.org/build-repo/126391/app.ytmdesktop.ytmdesktop.flatpakref

[ProjectSynchro]

It seems like there is a bug with how decryption of secrets works between Flatpak and Electron.

This essentially means that when using the Secrets portal, you can store a secret but not decrypt that secret without (potentially) some changes upstream as to how secrets are accessed.

See for context:
flathub/com.vscodium.codium#239
electron/electron#32598

The second issue (#5) is due to an issue with Electron again. (go figure)

Using the "basic" backend doesn't return isEncryptionAvailable as true for some reason..

So, this PR explicitly sets the password store to "basic" so the backend being used to store secrets (for decrypting login cookies and api keys) is consistent everywhere, a fix for the lastfm integration will have to come from an update upstream.

The XDG_CURRENT_DESKTOP environment variable is set to "unity" due to potential issues with.. you guessed it. Electron: electron/electron#39789. Setting this variable bypasses this issue.

This change doesn't cause any issues with the current Flatpak being updated, as we are already using the "basic" secrets backend due to process of elimination but setting it explicitly prevents issues in the future. It isn't as secure as using a proper secrets backend is, but it is the only backend that works.

[ProjectSynchro]

Added a workaround for ANOTHER Electron bug: electron/electron#40461

This should solve crashes when the "Show notification on song change" option is enabled.

[flathubbot]

Started test build 143352

[flathubbot]

Build 143352 successful
To test this build, install it from the testing repository:

flatpak install --user https://dl.flathub.org/build-repo/126408/app.ytmdesktop.ytmdesktop.flatpakref