Autolink behaves incorrectly when modifying a link at the end of the element

[pomek]

📝 Provide detailed reproduction steps (if any)

1. https://ckeditor.com/ckeditor-5/demo/
2. editors[ 0 ].setData( '<h2>This is <a href="http://ckeditor.com/">CKEditor5</a> from <a href="http://cksource.com/">CKSource</a>.</h2>' )
3. Put selection at the end of the second link:
   
   Selection should be after e.
4. Type .

✔️ Expected result

The selection stays at the end of the link. The dot should be at the end of link.

Selection should be the first dot (.).

❌ Actual result

The dot is being added at the end of the element and its (all) attributes are copied from the link node.

📃 Other details

• Browser: Chrome (83.0.4103.116)
• OS: Win 10
• CKEditor version: master / 20.0.0

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[Reinmar]

Now, the typed dot is not linked but the caret jumps to the wrong place (after the last dot, not the first one). I'm quite sure that it'll be fixed with #7462.

[CKEditorBot]

There has been no activity on this issue for the past year. We've marked it as stale and will close it in 30 days. We understand it may still be relevant, so if you're interested in the solution, leave a comment or reaction under this issue.

[CKEditorBot]

We've closed your issue due to inactivity over the last year. We understand that the issue may still be relevant. If so, feel free to open a new one (and link this issue to it).