fix execute cell and below for last cell

[jonah-iden]

What it does

Small fix for execute cell and below command. It did not work for the last cell of a notebook.

How to test

Open a notebook, focus the last cell and click the Execute Cell and Below option. The cell should execute just fine

Follow-ups

Breaking changes

• This PR introduces breaking changes and requires careful review. If yes, the breaking changes section in the changelog has been updated.

Attribution

Review checklist

• As an author, I have thoroughly tested my changes and carefully followed the review guidelines

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