docs: DOC-824: multi select combo_box example

[ethanalvizo]

No description provided.

[dsmmcken]

When in the None state, none is mis-aligned, flex might need a center on it?

How come the combobox doesn't close when I select an item from the list

[ethanalvizo]

When in the None state, none is mis-aligned, flex might need a center on it?

How come the combobox doesn't close when I select an item from the list

After digging deeper into the example it seems the combo box was staying open because I was setting the selected_key of ui.combo_box as None in the first drafts. I've reverted that and instead set the search input value to an empty string. This closes the combo box after making a selection and keeps the "search bar" (which is really just the combo box in this scenario) blank. The only downside of this approach though is that the focus is kept on the search input

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