clickstream npe fix if experiment not found

Signed-off-by: chandresh pancholi <chandresh.pancholi@navi.com>

litmus-mock/src/main/java/com/navi/medici/container/CustomLitmusContextProvider.java

@@ -15,7 +15,6 @@ public class CustomLitmusContextProvider implements LitmusContextProvider {
     @Override
     public LitmusContext getContext() {
         return LitmusContext.builder()
-            .clickStreamPayload(null)
             .userId(new Random().nextInt() + "")
             .clickStreamPayload("{\"app\":{\"name\":\"NaviDebug\",\"version\":\"77\",\"version_name\":\"1.9.3-cug-1-debug\"},\"client_ts\":\"1633768839907\",\"device\":{\"advertising_id\":\"8835d2b0-5615-412e-b133-8f8dc28e228e\",\"device_id\":\"9a14136215e76324\",\"manufacturer\":\"vivo\",\"model\":\"V2040\",\"os\":\"Android\",\"os_version\":\"30\"},\"events\":[{\"event_name\":\"splash\",\"timestamp\":1633768835058},{\"event_name\":\"home_activity\",\"timestamp\":1633768839791},{\"event_name\":\"home\",\"timestamp\":1633768839860},{\"event_name\":\"full_page_loader_shown\",\"timestamp\":1633768839868}],\"location\":{\"latitude\":\"null\",\"longitude\":\"null\"},\"network\":{\"carrier\":\"\",\"type\":\"Wifi\"},\"source\":\"SyncTimer\",\"user\":{}}")
             .build();