feat(polls) added padding to the buttons container

react/features/polls/components/native/PollCreate.js

                     keyExtractor = { (item, index) => index.toString() }
                     ref = { answerListRef }
                     renderItem = { renderListItem } />
-                <View style = { chatStyles.pollCreateButtons }>
+                <View style = { chatStyles.pollCreateButtonsContainer }>
                     <Button
                         color = '#3D3D3D'
                         mode = { BUTTON_MODES.CONTAINED }

react/features/polls/components/native/styles.js

         flex: 1
     },
 
+    pollCreateButtonsContainer: {
+        paddingVertical: BaseTheme.spacing[2]
+    },
+
     pollCreateButton: {
         flex: 1,
         marginHorizontal: 8