fix autocomplete list not closing problem

- updated `height` in `flatListProps` to `undefined` if city is selected to fix a bug where the
  `AutoComplete` list would remain open after a city search because `height` had not changed

SVA-833

src/screens/WasteCollectionScreen.js

@@ -347,7 +347,7 @@ export const WasteCollectionScreen = ({ navigation }) => {
             data={filteredCities}
             disableFullscreenUI
             flatListProps={{
-              height: dimensions.height - normalize(170),
+              height: inputValueCitySelected ? undefined : dimensions.height - normalize(170),
               keyboardShouldPersistTaps: 'handled',
               renderItem: inputValueCitySelected ? null : renderSuggestionCities
             }}