feat(service): fixing a crash if service is started from broadcast receiver

Author: milos1290

AndroidSDK/src/com/leanplum/LeanplumPushService.java

@@ -657,6 +657,7 @@ static void onStart() {
     } catch (LeanplumException e) {
       Log.e("There was an error registering for push notifications.\n" +
           Log.getStackTraceString(e));
+    } catch (Throwable ignored) {
     }
   }