show_icon: true stops working when any styles: , extra_styles or card_mod is added

**Checklist** - [ X] I updated the card to the latest version available - [X ] I cleared the cache of my browser **Describe the bug** When using show_icon: true alone, the icon renders correctly. However, as soon as any styling is added (via styles:, extra_styles, or card_mod), the icon disappears completely regardless of what styles are defined. Even a single harmless style like height: 50px on the card breaks the icon. **Version of the card** Version: v7.0.1 **Home Assistant version:** core-2026.5.3 **To Reproduce** This is the configuration I used: Works (icon visible): ```yaml type: custom:button-card entity: light.my_light icon: mdi:chandelier show_icon: true ``` Broken (icon invisible): ```yaml type: custom:button-card entity: light.my_light icon: mdi:chandelier show_icon: true styles: card: - height: 50px ``` **Screenshots** N/A **Expected behavior** An icon that is showed and the possibilities to make styling for the button and/or icon with styles: extra_styles and/or card-mod. **Desktop (please complete the following information):** - Browser: Microsoft Edge (also reproduced on Android) - card-mod version: v4.2.1 - Frosted Glass theme installed (but issue reproduces with default theme too) -Tested on clean dashboard with no other cards **Smartphone (please complete the following information):** - Device: Android (Samsung) - OS: [e.g. iOS8.1] - Browser [e.g. stock browser, safari] - Version [e.g. 22] **Additional context** Beeing working on builing a nice setup for my lamps with help from Claude, but even Claude was unable to make some styling and a visible icon.