Support interface delegation to inline class values (KT-27318)

compiler/testData/codegen/box/inlineClasses/interfaceImplementationByDelegation.kt

@@ -0,0 +1,18 @@
+// !LANGUAGE: +InlineClasses
+// IGNORE_BACKEND: JVM_IR
+
+interface IFoo {
+    fun getO(): String
+    val k: String
+
+    val ok: String get() = getO() + k
+}
+
+inline class InlineFooImpl(val s: String): IFoo {
+    override fun getO(): String = s
+    override val k: String get() = "K"
+}
+
+class Test(s: String) : IFoo by InlineFooImpl(s)
+
+fun box() = Test("O").ok