fix: update combobox props in SpaceSelect component (#1564)

Added 'keepMounted: false' and 'dropdownPadding: 0' to comboboxProps for improved dropdown behavior and appearance in the SpaceSelect sidebar component.

apps/client/src/features/space/components/sidebar/space-select.tsx

@@ -90,7 +90,7 @@ export function SpaceSelect({
       nothingFoundMessage={t("No space found")}
       limit={50}
       checkIconPosition="right"
-      comboboxProps={{ width, withinPortal: true, position: "bottom" }}
+      comboboxProps={{ width, withinPortal: true, position: "bottom", keepMounted: false, dropdownPadding: 0 }}
       dropdownOpened={opened}
     />
   );