Support Features rendering / static/unmount props

Fixes #1

src/lib/components/disclosure/DisclosurePanel.svelte

@@ -14,7 +14,7 @@
   import { get_current_component } from "svelte/internal";
   import type { SupportedAs } from "$lib/internal/elements";
   import type { HTMLActionArray } from "$lib/hooks/use-actions";
-  import Render from "$lib/utils/Render.svelte";
+  import Render, { Features } from "$lib/utils/Render.svelte";
   const forwardEvents = forwardEventsBuilder(get_current_component());
 
   export let as: SupportedAs = "div";
@@ -41,15 +41,15 @@
   };
 </script>
 
-{#if visible}
-  <Render
-    {...{ ...$$restProps, ...propsWeControl }}
-    {as}
-    {slotProps}
-    use={[...use, forwardEvents]}
-    name={"DisclosurePanel"}
-    bind:el={$panelStore}
-  >
-    <slot {...slotProps} />
-  </Render>
-{/if}
+<Render
+  {...{ ...$$restProps, ...propsWeControl }}
+  {as}
+  {slotProps}
+  use={[...use, forwardEvents]}
+  name={"DisclosurePanel"}
+  bind:el={$panelStore}
+  {visible}
+  features={Features.RenderStrategy | Features.Static}
+>
+  <slot {...slotProps} />
+</Render>