"Update" button should become inactive when a signature mismatch has been detected

Summary

The Update button becomes inactive when a signature mismatch is detected (cf. #5769 (closed))

Description

What is the current behavior?

The first time a signature mismatch is detected, a message explaining the problem to the user appears and the Update button is transformed into Retry. As this message won't appear again, later on it becomes an active Update button again.

What is the improved behavior?

The first time a signature mismatch is detected, a message explaining the problem to the user appears and the Update button becomes inactive and stays that way as long as the user has not uninstalled the app.

What does it bring?

The user understands s.he cannot update this app in the current situation.

Examples

Validation

Checklist

• [ ] License
• Translations
• Documentation
• Test plan