IVE: Interface name duplication/renaming

I made this system, and named both interfaces "hello" :

As you can see, the RI of the second one was renamed Function 1 hello, however on function 1, the first RI was not renamed to "Function 2 hello"... Or actually it was but it does not appear anywhere, until I try to edit Function 1 🇸🇻

For the renaming here is the desired behaviour:

1. It should be allowed to have a PI and a RI with the same name on a function (perhaps I was not clear on this before)
2. The renaming of the RI should happen only when there is already a RI of the same name on a function
3. An error should be raised if user tries to name 2 PIs with the same name on a function