87b2082f81
Since firmware 0.2.42 a slider showed the tile's colour only while Tile::active() held, which is never true for a playing, paused or idle media player, a cover or a number, so their volume, position and value sliders stayed grey like a light that is off. Tile::slider_active() follows Home Assistant's tile sliders instead: grey for an unavailable entity, a light or fan that is off and a media player that is off or in standby; a closed cover keeps its colour as in HA's cover position feature, and a number with a value is active. The sliders of direct controls on wide tiles and the small sliders use it; Tile::active() and its other uses are unchanged. Checked with 282 Python and 15 C++ tests, generate_packages --check, ESP32 builds of both check profiles and host renders of both boards. Firmware 0.2.52. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>