fix: rich text indented list error

Author: gjulivan

packages/pluggableWidgets/rich-text-web/CHANGELOG.md

@@ -14,6 +14,7 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 ### Fixed
 
 - We fixed issue when empty paragraph do not shown as line break in html viewer by adding empty space content ` `.
+- We fixed an issue where indented list throws error when reopen.
 
 ## [4.7.0] - 2025-06-02
 

packages/pluggableWidgets/rich-text-web/src/utils/helpers.ts

@@ -38,7 +38,7 @@ export function constructWrapperStyle(props: RichTextContainerProps): CSSPropert
 export function updateLegacyQuillFormats(quill: Quill): boolean {
     const results = transformLegacyQuillFormats(quill.getContents());
     if (results.isDirty) {
-        quill.setContents(results.data, Quill.sources.USER);
+        quill.setContents(new Delta(results.data), Quill.sources.API);
     }
     return results.isDirty;
 }