char-white: Add missing Inherits fallback array to index.theme

### Describe the bug
The `char-white` icon theme lacks an `Inherits` fallback array in its `index.theme` configuration. On a cold boot of KDE Plasma 6, `plasmashell` fails to map missing status notifier assets natively from the theme directory. This causes system tray items (such as notifications and brightness) to default to generic placeholder question marks until the theme is manually toggled in the settings UI.

### Expected behavior
The theme should declare standard fallbacks so the system can resolve missing status assets immediately during initialization.

### Proposed fix
Add the following line to `/usr/share/icons/char-white/index.theme` directly under the `[Icon Theme]` section header:

```ini
Inherits=breeze-dark,breeze,hicolor
```

### Actual Result
Completely fixes the broken icon issue.

Open /usr/share/icons/char-white/index.theme and inspect the [Icon Theme] section. Add the specified Inherits fallback array directly beneath that header, then verify that the file declares breeze-dark, breeze, and hicolor as fallbacks and that the theme resolves missing status assets on cold boot.

Written by the indexing model from the issue text.