vscodium: fix bundle resources being modified on darwin

[andre4ik3]

Fixes #320494 by applying the same fix as in vscode to vscodium as well.

Things done

Tested bundle resources aren't modified anymore:

❯ nix build .#vscodium

❯ codesign -dvv result/Applications/VSCodium.app
Executable=/nix/store/ayymbdi0vgizlcks8v7lik5jfybkl86p-vscodium-1.96.2.24355/Applications/VSCodium.app/Contents/MacOS/Electron
Identifier=com.vscodium
Format=app bundle with Mach-O thin (arm64)
CodeDirectory v=20500 size=760 flags=0x10000(runtime) hashes=13+7 location=embedded
Signature size=9052
Authority=Developer ID Application: Baptiste Augrain (VC39D2VNQ7)
Authority=Developer ID Certification Authority
Authority=Apple Root CA
Timestamp=20 Dec 2024 at 22:26:52
Notarization Ticket=stapled
Info.plist entries=35
TeamIdentifier=VC39D2VNQ7
Runtime Version=14.0.0
Sealed Resources version=2 rules=13 files=2098
Internal requirements count=1 size=172

❯ codesign -vv result/Applications/VSCodium.app
result/Applications/VSCodium.app: valid on disk
result/Applications/VSCodium.app: satisfies its Designated Requirement

• Built on platform(s)
  • x86_64-linux
  • aarch64-linux
  • x86_64-darwin
  • aarch64-darwin
• For non-Linux: Is sandboxing enabled in nix.conf? (See Nix manual)
  • sandbox = relaxed
  • sandbox = true
• Tested, as applicable:
  • NixOS test(s) (look inside nixos/tests)
  • and/or package tests
  • or, for functions and "core" functionality, tests in lib/tests or pkgs/test
  • made sure NixOS tests are linked to the relevant packages
• Tested compilation of all packages that depend on this change using nix-shell -p nixpkgs-review --run "nixpkgs-review rev HEAD". Note: all changes have to be committed, also see nixpkgs-review usage
• Tested basic functionality of all binary files (usually in ./result/bin/)
• 25.05 Release Notes (or backporting 24.11 and 25.05 Release notes)
  • (Package updates) Added a release notes entry if the change is major or breaking
  • (Module updates) Added a release notes entry if the change is significant
  • (Module addition) Added a release notes entry if adding a new NixOS module
• Fits CONTRIBUTING.md.

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[DimitarNestorov]

LGTM

[bobby285271]

Thanks (I can't test on darwin so I am trusting the testing here)