Windows tray new mail icon wasn't updated like the macOS and Linux ones

[Specimen]

Description

When the tray icon for new email ( MenuItem-Inbox-Full-NewItems@2x.png) was updated for Linux and macOS with a more readable icon:

The Windows tray icon wasn’t updated. The same reasons as to why the icon was changed (readability) also applies to Windows, so that’s why I flag it as a bug.

To Reproduce…

Steps to reproduce the behavior:

Install Mailspring on Windows and on Linux and compare when new mail arrives.

Expected Behavior

The icon should be the same.

Screenshots

Setup

• OS and Version: Windows 10 (20H2)
• Installation Method: Installer
• Mailspring Version: 1.8.0-8983dca2

Additional Context

I added this as a Feature Request earlier:

A more readable Windows tray icon new mail badge

The Problem The New Mail blue dot on the system tray icon (WIndows) is barely readable. Has very little contrast with the inbox tray design on a dark theme, this issue has been referenced before relating to the Linux client, and the icon has been updated for Linux but not for Windows. Proposed Solution In the discussions regarding the Linux version the Slack tray icon for new messages was given as an example, basically having a more saturated blue. Alternative Solutions Just copy the Linux …

… But realized later this problem existed because the developers didn’t update the win32 folder system tray assets like they did for linux and darwin.