Table selection does not cooporate with typing

[jodator]

📝 Provide detailed reproduction steps (if any)

1. Make mouse selection in table for 2+ table cells
2. Type something

✔️ Expected result

You should be able to type in last table cell.

❌ Actual result

Something breaks

📃 Other details

I've tried to fix this issue with

this.listenTo( viewDocument, 'keydown', () => {
	if ( !this.hasMultiCellSelection ) {
		return;
	}

	editor.model.change( writer => {
		const end = this._endElement;
		this.clearSelection();
		writer.setSelection( end.getChild( 0 ), 0 );
	} );
}, { priority: 'highest' } );

In the TableSelection class and it works well but it needs some behavior polishing. For isntance arrows do not work as expected (you end up in different cell then end one.

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[Reinmar]

This should be handled in the ckeditor5-typing package. There's a listener for keydown which should make sure that the selection is collapsed. Let's move the selection to the first cell. We don't even need to select its content.

[Reinmar]

May be blocked by #6328.