Bug Report: Cannot upgrade platform: arduino:avr@1.8.3 is not managed by package manager

[hansmets]

Version

0.20

Bug description

When running EX-Installer-Win64.exe after installing the Arduino CLI I get the message Error during install: Cannot upgrade platform: arduino:avr@1.8.3 is not managed by package manager. The ful log:
2025-10-18 22:27:29.133 - ex_installer.arduino_cli - ERROR - Error during install: Cannot upgrade platform: arduino:avr@1.8.3 is not managed by package manager
2025-10-18 22:27:29.226 - ex_installer.manage_arduino_cli - ERROR - Error encountered in process phase None
2025-10-18 22:27:29.226 - ex_installer.manage_arduino_cli - ERROR - Error during install: Cannot upgrade platform: arduino:avr@1.8.3 is not managed by package manager

Steps to reproduce the bug

1. Run EX-Installer
2. Click manage Arduino CLI
3. Click Refresh Arduino CLI

Expected behaviour

No error

Screenshots

No response

Additional context

No response