PWA: Keyboard flickers when switching input method in light theme

[Marukohe]

Description

When using Gate in PWA mode with the light theme enabled, switching the keyboard input method (e.g., toggling between languages or input modes on mobile) causes the keyboard to flicker.

Steps to Reproduce

1. Install Gate as a PWA on a mobile device (iOS/Android)
2. Set the theme to light mode
3. Open a chat session and focus the input field
4. Switch the keyboard input method (e.g., toggle between English and another language)
5. Observe the keyboard flickering during the switch

Expected Behavior

The keyboard should remain stable when switching input methods, with no visible flicker.

Actual Behavior

The keyboard flickers briefly each time the input method is switched. This only occurs in light theme mode under PWA.

Environment

• Mode: PWA (Add to Home Screen)
• Theme: Light