fix: updateWysiwygStyle updatedElement is undefined TypeError (#4980)

Co-authored-by: dwelle <luzar.david@gmail.com>

src/element/textWysiwyg.tsx

@@ -102,9 +102,11 @@ export const textWysiwyg = ({
 
   const updateWysiwygStyle = () => {
     const appState = app.state;
-    const updatedElement = Scene.getScene(element)?.getElement(
-      id,
-    ) as ExcalidrawTextElement;
+    const updatedElement =
+      Scene.getScene(element)?.getElement<ExcalidrawTextElement>(id);
+    if (!updatedElement) {
+      return;
+    }
     const { textAlign, verticalAlign } = updatedElement;
 
     const approxLineHeight = getApproxLineHeight(getFontString(updatedElement));

src/scene/Scene.ts

@@ -62,8 +62,8 @@ class Scene {
     return this.nonDeletedElements;
   }
 
-  getElement(id: ExcalidrawElement["id"]): ExcalidrawElement | null {
-    return this.elementsMap.get(id) || null;
+  getElement<T extends ExcalidrawElement>(id: T["id"]): T | null {
+    return (this.elementsMap.get(id) as T | undefined) || null;
   }
 
   getNonDeletedElement(