Editor crashes after inserting a new line after an image in a blockquote

[Mgsy]

Is this a bug report or feature request? (choose one)

🐞 Bug report

💻 Version of CKEditor

Latest master.

📋 Steps to reproduce

1. Upload an image.
2. Wrap it in a blockquote.
3. Focus the image and press Enter.

✅ Expected result

A new line is inserted.

❎ Actual result

The editor crashes.

📃 Other details that might be useful

GIF

Error

ckeditorerror.js:46 Uncaught CKEditorError: model-position-path-incorrect: Position path must be an array with at least one item. Read more: https://ckeditor.com/docs/ckeditor5/latest/framework/guides/support/error-codes.html#error-model-position-path-incorrect
 {"path":[]}
    at new Kr (http://192.168.1.48:8081/build/docs/ckeditor5/latest/snippets/build-classic-source/snippet.js:4:134649)
    at Function.getInsertionPosition (http://192.168.1.48:8081/build/docs/ckeditor5/latest/snippets/build-classic-source/snippet.js:4:218698)
    at new fl (http://192.168.1.48:8081/build/docs/ckeditor5/latest/snippets/build-classic-source/snippet.js:4:216685)
    at gl.split (http://192.168.1.48:8081/build/docs/ckeditor5/latest/snippets/build-classic-source/snippet.js:4:224126)
    at Object.e.change.i [as callback] (http://192.168.1.48:8081/build/docs/ckeditor5/latest/snippets/build-classic-source/snippet.js:4:357738)
    at Kl._runPendingChanges (http://192.168.1.48:8081/build/docs/ckeditor5/latest/snippets/build-classic-source/snippet.js:4:257828)
    at Kl.change (http://192.168.1.48:8081/build/docs/ckeditor5/latest/snippets/build-classic-source/snippet.js:4:255271)
    at vd._handleEnterKey (http://192.168.1.48:8081/build/docs/ckeditor5/latest/snippets/build-classic-source/snippet.js:4:357567)
    at vd._onKeydown (http://192.168.1.48:8081/build/docs/ckeditor5/latest/snippets/build-classic-source/snippet.js:4:356539)
    at os.listenTo.t (http://192.168.1.48:8081/build/docs/ckeditor5/latest/snippets/build-classic-source/snippet.js:4:355763)

It's a regression.