The selection moves outside a table after selecting multiple cells

[Mgsy]

📝 Provide detailed reproduction steps (if any)

1. Go to http://localhost:8125/ckeditor5-table/tests/manual/tableselection.html.
2. In the first editor select a few cells.

✔️ Expected result

Only table cells are selected.

❌ Actual result

The text below the table is also selected.

📃 Other details

• The model selection is correct

• Browser: Chrome, Edge

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[Reinmar]

We wanted to keep it as a part of #6114.