Relationships cannot have the same name as properties

[Tigrov]

https://github.com/yiisoft/active-record/pull/545/changes/BASE..dc1ccc01420b562a7c675b133c4e8847baa40fd6#diff-f5da40b4c254bf632726073a1f35900916d12a24d5d205d700df9fc95455363bR201-R213

Doesn't it look like a bug?
Either relationships cannot have the same name as properties, or unset() must remove both values.

Originally posted by @Tigrov in #545 (comment)

[samdark]

I think having the same name for a relation/property should throw an exception. Trying to handle it somehow would not lead to anything good.