Home Assistant 2026.3.0 and some bugs

• Resolved an issue where Key capture would not start recording on an Activity change.
• Added support for Home Assistant 2026.3.0 while (hopefully) maintaining backward compatibility. The 26.3 release of HA is not called "a clean sweep" for nothing. Home Assistant switched their frontend framework to Web Awesome and that impacts many built in controls. This card is impacted through its reliance on ha-select (the Activity selects) and ha-selector (the Action selector). My setup for testing this is not ideal. Backward compatibility should be maintained but is not tested. Theming of the card may behave differently. Potentially more changes of the card are required, but it's also possible that theme makers have to catch up.
• The "shrink" feature is removed as it no longer works in HA 26.3.