Allow setting properties and fields with null conditional operator

[JustNrik]

For some reason, this isn't allowed:

someNullableInstance?.SomeProperty = SomeValue;

I don't know why this doesn't compile, forcing the user to make a Set method or add more lines of code just to assign a value to a property when the instance isn't null.

Proposal: Allow it, properties are nothing but autogenerated methods, there's no reason why this isn't allowed.

[svick]

There is already a championed issue about this: #2883.

[JustNrik]

Oh lol, I was searching for this to avoid posting a duplicated issue and I couldn't find it

[CyrusNajmabadi]

This is definitely a dupe of #2883