Localization generation doesn't work

When using flutter_localizations and `generate: true`, the IDE's 'pub get' clear the generated files, but doesn't generate them. Using `flutter pub get` in terminal generates them.

```
[✓] Flutter (Channel beta, 2.3.0-24.1.pre, on macOS 11.4 20F71 darwin-x64,
locale en-BR)
• Flutter version 2.3.0-24.1.pre at /usr/local/flutter
• Upstream repository https://github.com/flutter/flutter.git
• Framework revision 615957513e (4 weeks ago), 2021-06-25 09:24:44 -0700
• Engine revision 9d517f475b
• Dart version 2.14.0 (build 2.14.0-188.5.beta)

[✓] IntelliJ IDEA Ultimate Edition (version 2021.1.3)
• IntelliJ at /Users/bernardoferrari/Applications/JetBrains Toolbox/IntelliJ
IDEA Ultimate.app
• Flutter plugin version 58.0.3
• Dart plugin version 211.7727
```