Build fails due to archived flutter-desktop-embedding dependency #2818

The flutter/samples repository contains git dependencies on the archived repository google/flutter-desktop-embedding, causing build failures.

Steps to Reproduce

1. Clone the samples repository: git clone https://github.com/flutter/samples.git
2. Navigate to any sample project: cd samples/material_3_demo
3. Run flutter pub get

Actual Behavior

PS C:\Users\Howl\Desktop\code\samples\material_3_demo> flutter build apk
Resolving dependencies in C:\Users\Howl\Desktop\code\samples... (6.5s)
cal\Pub\Cache_temp\dirb33f28d3`
stdout:
stderr: Cloning into bare repository 'C:\Users\Howl\AppData\Local\Pub\Cache_temp\dirb33f28d3'...
fatal: unable to access 'https://github.com/google/flutter-desktop-embedding.git/': Empty reply from server
exit code: 128
Failed to update packages.

Root Cause

The flutter-desktop-embedding repository was archived by the owner on Dec 3, 2025, and is now read-only.

Affected Files

The following 10 pubspec.yaml files contain git dependencies pointing to the
archived google/flutter-desktop-embedding repository:

• animations/pubspec.yaml
• desktop_photo_search/fluent_ui/pubspec.yaml
• desktop_photo_search/material/pubspec.yaml
• form_app/pubspec.yaml
• infinite_list/pubspec.yaml
• isolate_example/pubspec.yaml
• navigation_and_routing/pubspec.yaml
• provider_counter/pubspec.yaml
• provider_shopper/pubspec.yaml
• simplistic_calculator/pubspec.yaml