Fix Freezing with GPU

[onesounds]

What's PR

• Fixed a freezing issue after sleep when the GPU is active
• Activate the GPU

Reproduce

• Open FLOW's settings window, then press WIN+L to switch to the lock screen.
• After logging back in, try navigating to a different menu in the settings window to check if it freezes.

How to Fix

• When the first window is opened during a freeze, the settings window unfreezes.
• Handled specific events to trigger showing the main window when they occur.

Issues and Idea

• When sound is enabled, a sound plays and a brief flicker is visible.
• Consider implementing a custom show method that skips sound and uses opacity to create a transparent effect.

Test Cases

• The settings window should not freeze after re-entering from WIN+L.
• The settings window should not freeze after resuming from sleep

[github-actions]

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