Changes security stamp when password change via using ChangePasswordAsync function

[demirmusa]

User.SecurityStamp will be changed when:

• (AbpUserManager).ChangePasswordAsync called
• (AbpUserManager).UpdateAsync called and if IsUserCredentialsSameWithStored returns false
  (It controls If UserName , Email and Password are changed) removed

resolves #4775

[maliming]

According to the source code of Identity Core, it will not update SecurityStamp in UserManager's UpdateAsync method. It will update SecurityStamp under certain methods, such as SetUserNameAsync, ChangeEmailAsync, UpdatePasswordHash.

Perhaps its idea is that developers should not use the UpdateAsync method to update important information such as passwords or usernames. For example, developers should use the UpdatePasswordHash method to modify the user's password.

Should we follow this line of thinking?

[ismcagdas]

@maliming yes, we can follow this approach as well 👍 @demirmusa could you make the necessary changes ?