Fix test failures - handle loading state in error callback and fix numbered list detection

Co-authored-by: santoshvandari <63558580+santoshvandari@users.noreply.github.com>

Author: Copilot

lib/src/docx_view.dart

@@ -194,12 +194,15 @@ class _DocxViewState extends State<DocxView> {
 
   /// Handles errors by calling the [onError] callback if provided, or displaying the error message.
   void _handleError(Exception error) {
+    setState(() {
+      isLoading = false;
+    });
+    
     if (widget.onError != null) {
       widget.onError!(error);
     } else {
       setState(() {
         fileContent = error.toString();
-        isLoading = false;
       });
     }
   }

lib/src/extract_text_from_docx.dart

@@ -43,7 +43,7 @@ String extractTextFromDocxBytes(Uint8List bytes) {
         paragraph.findAllElements('w:t').map((node) => node.innerText).join();
 
     // Check for numbering information in the paragraph
-    final numIdNode = paragraph.findElements('w:numId').firstOrNull;
+    final numIdNode = paragraph.findAllElements('w:numId').firstOrNull;
     final numId = numIdNode?.getAttribute('w:val');
 
     // Manage numbering: increment or reset based on numId changes