button is added to span with 'html-object-embed ck-widget ck-widget_selected' class.

[lathalks]

📝 Provide detailed reproduction steps (if any)

I am adding a content in CKeditor 5 .The html content is

<div style="text-align:center;">
<button class=" btn btn-primary d-inline-block mt-4" data-bs-dismiss="modal" href="javascript:void(0);" id="closebtn"><span class="link">Close</span></button></span></div>

✔️ Expected result

<div style="text-align:center;">
<button class=" btn btn-primary d-inline-block mt-4" data-bs-dismiss="modal" href="javascript:void(0);" id="closebtn"><span class="link">Close</span></button></span></div>

What is the expected result of the above steps?

❌ Actual result

<div style="text-align:center;">
<span class="html-object-embed ck-widget ck-widget_selected" data-html-object-embed-label="HTML object" contenteditable="false"><button class="html-object-embed__content btn btn-primary d-inline-block mt-4" data-bs-dismiss="modal" data-ck-unsafe-attribute-href="javascript:void(0);" id="closebtn"><span class="link">Close</span></button></span></div>

What is the actual result of the above steps?

❓ Possible solution

I see there is a toObjectWidgetConverter() function in converter.js under html-support package which is converting to this.
Is there a way to stop this conversion.

📃 Other details

• Browser: …
• OS: …
• First affected CKEditor version: …
• Installed CKEditor plugins: …
  *These are the installed plugins.
  Alignment,
  AutoImage,
  AutoLink,
  Autoformat,
  BlockQuote,
  Bold,
  CKFinder,
  CKFinderUploadAdapter,
  Essentials,
  FindAndReplace,
  FontBackgroundColor,
  FontColor,
  FontFamily,
  FontSize,
  FullPage,
  GeneralHtmlSupport,
  RenderStyleElements,
  Heading,
  Highlight,
  HorizontalLine,
  HtmlComment,
  HtmlEmbed,
  Image,
  ImageCaption,
  ImageInsert,
  ImageResize,
  ImageStyle,
  ImageToolbar,
  //ImageUpload,
  Indent,
  IndentBlock,
  Italic,
  Link,
  LinkImage,
  List,
  Paragraph,
  PasteFromOffice,
  SelectAll,
  ShowBlocks,
  SourceEditing,
  SpecialCharacters,
  SpecialCharactersArrows,
  SpecialCharactersCurrency,
  SpecialCharactersEssentials,
  SpecialCharactersLatin,
  SpecialCharactersMathematical,
  SpecialCharactersText,
  StandardEditingMode,
  Strikethrough,
  Style,
  Subscript,
  Superscript,
  Table,
  TableCaption,
  TableCellProperties,
  TableColumnResize,
  TableProperties,
  TableToolbar,
  TodoList,
  Underline,
  Undo,
  MinimalisticModal

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