Clear inbox messages list when clicking action button

[dpalou]

Description

Right now, clicking an action button with foreground=false doesn't clear the list of messages of an inbox notification, the only thing it does is dismiss the notification. If you receive a new notification, the full list is displayed again.

With this patch the list is cleared when an action button is clicked. This affects inline replies too.

Related Issue

#2699

Motivation and Context

The list of messages should be cleared when clicking an action button, otherwise the user will see the same notifications over and over again.

How Has This Been Tested?

I didn't find any Jasmine test about inbox notifications, so I tested it manually in:

• Honor 8 with Android 7.
• Android Simulator: Pixel XL with API 27.

The changes are quite small and shouldn't affect other areas of the code.

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)

Checklist:

• My code follows the code style of this project.
• My change requires a change to the documentation.
• I have updated the documentation accordingly.
• I have read the CONTRIBUTING document.
• I have added tests to cover my changes.
• All new and existing tests passed.