Removed classcat and reworked class types from string to ClassValue

packages/svelte/src/lib/container/Panel/Panel.svelte

@@ -1,5 +1,4 @@
 <script lang="ts">
-  import cc from 'classcat';
   import type { PanelProps } from './types';
   import { useStore } from '$lib/store';
 
@@ -17,7 +16,7 @@
 </script>
 
 <div
-  class={cc(['svelte-flow__panel', className, ...positionClasses])}
+  class={['svelte-flow__panel', className, ...positionClasses]}
   {style}
   style:pointer-events={store.selectionRectMode ? 'none' : ''}
   {...restProps}

packages/svelte/src/lib/container/Panel/types.ts

@@ -1,5 +1,5 @@
 import type { PanelPosition } from '@xyflow/system';
-import type { HTMLAttributes } from 'svelte/elements';
+import type { ClassValue, HTMLAttributes } from 'svelte/elements';
 
 export type PanelProps = HTMLAttributes<HTMLDivElement> & {
   'data-testid'?: string;
@@ -9,5 +9,5 @@ export type PanelProps = HTMLAttributes<HTMLDivElement> & {
    */
   position?: PanelPosition;
   style?: string;
-  class?: string;
+  class?: ClassValue;
 };