room-card: Using attributes in icon conditionals doesn't seem to work

Describe the bug

Using attributes in icon conditionals doesn’t seem to work

To Reproduce

type: custom:room-card
title: Tester
entities: 
  - entity: update.home_assistant_core_update
    icon:
      conditions:
        - icon: mdi:radiator
          attribute: supported_features
          condition: above
          value: 0

the update.home_assistant_core_update attributes should look something similar to:

auto_update: false
installed_version: 2022.9.2
in_progress: false
latest_version: 2022.9.2
release_summary: null
release_url: https://www.home-assistant.io/latest-release-notes/
skipped_version: null
title: Home Assistant Core
entity_picture: https://brands.home-assistant.io/homeassistant/icon.png
friendly_name: Home Assistant Core Update
supported_features: 11

Expected behavior The icon to be an mdi:radiator as we check the supported_features attribute for a value greater than 0

Screenshots

Desktop (please complete the following information):

• OS: linux
• Browser: firefox
• Version: 104.0.2

Additional context 1, this card is great and exactly the kind of card that HA should be offering by default 2, setting an entity value in the conditional doesn’t make any difference