I reproduced the issue on a lab, that seems to be expected. I will let you know if I find proper documentation for that.so don't worry about that for now. review attach.

ok i guess the config was just not updated. what shows on the command is not the problem.lets get a capture;cap cap interface outside match ip host 218.98.128.178 host 185.146.223.162try to send traffic in order to bind the tunnel and get;#show cap c...

also your next hub IP is probably not right route outside 0.0.0.0 0.0.0.0 219.95.126.177 1   can you ping 4.2.2.2 from the ASA?

 Well the configuration on your side looks good, but you are sending the request and the replay is not coming back. is the sonic wall already pointing at 218.98.128.178? make sure it also supports 3des and md5 for phase 1. 

Hi,   enable crypto on the outside.   crypto map outside_map interface outside