[KSP2] KSPropertyDeclaration.getter is empty for property that is duplicated in two parent interfaces

```
class TestClass

interface Deps1 {
val testClass: TestClass
}

interface Deps2 {
val testClass: TestClass
}

interface Root: Deps1, Deps2
```

In that case `getter` of `testClass` property is null, while in KSP1 it returns actual getter.