Have "in type" for java fields to be able to check that type in assignment positions (against rhs' type)

^KT-46727 Fixed

compiler/ir/ir.tree/src/org/jetbrains/kotlin/ir/descriptors/IrBasedDescriptors.kt

@@ -884,6 +884,8 @@ open class IrBasedPropertyDescriptor(owner: IrProperty) :
         TODO("not implemented")
     }
 
+    override fun getInType(): KotlinType? = setter?.valueParameters?.get(0)?.type
+
     override fun <V : Any?> getUserData(key: CallableDescriptor.UserDataKey<V>?): V? = null
 }
 
@@ -1062,6 +1064,8 @@ open class IrBasedFieldDescriptor(owner: IrField) : PropertyDescriptor, IrBasedD
     override fun getBackingField(): FieldDescriptor? = null // TODO
     override fun getDelegateField(): FieldDescriptor? = null // TODO
 
+    override fun getInType(): KotlinType? = setter?.valueParameters?.get(0)?.type
+
     override fun <V : Any?> getUserData(key: CallableDescriptor.UserDataKey<V>?): V? = null
 }