docs(combobox): Add allowsEmptyCollection prop to docs (kobaltedev#487

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apps/docs/src/routes/docs/core/components/combobox.mdx

@@ -921,6 +921,7 @@ We expose a CSS custom property `--kb-combobox-content-transform-origin` which c
 | removeOnBackspace             | `boolean` <br/> When `multiple` is true, whether the last selected option should be removed when the user press the Backspace key and the input is empty.                                                                                                                                                                                                                                 |
 | allowDuplicateSelectionEvents | `boolean` <br/> Whether `onChange` should fire even if the new value is the same as the last.                                                                                                                                                                                                                                                                                             |
 | disallowEmptySelection        | `boolean` <br/> Whether the combobox allows empty selection or not.                                                                                                                                                                                                                                                                                                                       |
+| allowsEmptyCollection         | `boolean` <br/> Whether the combobox allows the menu to be open when the collection is empty.                                                                                                                                                                                                                                                                                             |
 | closeOnSelection              | `boolean` <br/> Whether the combobox closes after selection.                                                                                                                                                                                                                                                                                                                              |
 | selectionBehavior             | `'toggle' \| 'replace'` <br/> How selection should behave in the combobox.                                                                                                                                                                                                                                                                                                                |
 | virtualized                   | `boolean` <br/> Whether the combobox uses virtual scrolling.                                                                                                                                                                                                                                                                                                                              |