fix: ensure NOTEBOOK_CELL_TYPE context key is set during initialization #15182
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What it does
This PR ensures that the context keys NOTEBOOK_CELL_TYPE, NOTEBOOK_CELL_MARKDOWN_EDIT_MODE, and NOTEBOOK_CELL_EDITABLE are properly set when opening a new notebook.
This update addresses a bug where pressing cmd/ctrl+enter immediately after opening a new notebook file does not trigger the execute command but instead adds new lines. Below is a gif demonstrating the issue. Note that I was pressing cmd+enter keys.
How to test
Open a new notebook editor and focus on the first cell. Press ctrl/cmd + enter, and you will notice that it does not execute the cell command.
Follow-ups
Breaking changes
Attribution
Review checklist
Reminder for reviewers