Tray icons not compatible with light mode

[NecatiMeral]

Describe the bug

The icons in the tray icon are missing contrast when using the light mode.

To Reproduce

Steps to reproduce the behavior:

See the screenshot

Expected behavior

The icons should be readable

Screenshots

Client

(please complete the following information)

• Operating System: [e.g. macOS Sequoia 15.3, Windows 10]: Windows
• Browser: [e.g. chrome, safari] /
• PullRequest-Manager Version: [e.g. 1.0.0] 0.1.0-alpha.56

Additional context