Fix: disable crash in settings by improving typing

src/UI/Base/SvelteUIElement.ts

@@ -25,12 +25,20 @@ export default class SvelteUIElement<
     private tag: "div" | "span" = "div"
     public readonly isSvelte = true
 
-    constructor(svelteElement, props?: Props, events?: Events, slots?: Slots) {
+    constructor(svelteElement : {
+        new (args: {
+            target: HTMLElement
+            props: Props
+            events?: Events
+            slots?: Slots
+        }): SvelteComponentTyped<Props, Events, Slots>
+    }, props?: Props, events?: Events, slots?: Slots) {
         super()
         this._svelteComponent = <any>svelteElement
         this._props = props ?? <Props>{}
         this._events = events
         this._slots = slots
+        console.trace("Constructing a special stack element")
     }
 
     public setSpan() {

src/UI/Base/ToSvelte.svelte

@@ -31,7 +31,7 @@
   })
 </script>
 
-{#if isSvelte}
+{#if svelteElem?._svelteComponent}
   {#if svelteElem.getClass() || svelteElem.getStyle()}
     <svelte:component
       this={svelteElem?._svelteComponent}