Enable delegation by interface for inline classes in old FE

#KT-27435

compiler/testData/codegen/box/inlineClasses/delegationByUnderlyingType/default.kt

@@ -0,0 +1,20 @@
+// WITH_STDLIB
+// IGNORE_LIGHT_ANALYSIS
+// IGNORE_BACKEND: JVM
+// IGNORE_BACKEND_FIR: JVM_IR
+// LANGUAGE: +InlineClassImplementationByDelegation
+
+interface I {
+    fun ok(): String = "OK"
+}
+
+inline class IC(val i: I): I by i
+
+fun box(): String {
+    val i = object : I {}
+    var res = IC(i).ok()
+    if (res != "OK") return "FAIL: $res"
+    val ic: I = IC(i)
+    res = ic.ok()
+    return res
+}

compiler/testData/codegen/box/inlineClasses/delegationByUnderlyingType/defaultArgument.kt

@@ -0,0 +1,28 @@
+// WITH_STDLIB
+// IGNORE_LIGHT_ANALYSIS
+// IGNORE_BACKEND: JVM
+// IGNORE_BACKEND_FIR: JVM_IR
+// LANGUAGE: +InlineClassImplementationByDelegation
+
+interface I {
+    fun o(k: String = "K"): String = "O$k"
+}
+
+inline class IC(val i: I): I by i
+
+fun box(): String {
+    val i = object : I {}
+    val ic1 = IC(i)
+    var res = ic1.o()
+    if (res != "OK") return "FAIL 1: $res"
+    res = ic1.o("KK")
+    if (res != "OKK") return "FAIL 2: $res"
+
+    val ic2: I = IC(i)
+    res = ic2.o()
+    if (res != "OK") return "FAIL 3: $res"
+    res = ic2.o("KK")
+    if (res != "OKK") return "FAIL 4: $res"
+
+    return "OK"
+}

compiler/testData/codegen/box/inlineClasses/delegationByUnderlyingType/simple.kt

@@ -0,0 +1,22 @@
+// WITH_STDLIB
+// IGNORE_LIGHT_ANALYSIS
+// IGNORE_BACKEND: JVM
+// IGNORE_BACKEND_FIR: JVM_IR
+// LANGUAGE: +InlineClassImplementationByDelegation
+
+interface I {
+    fun ok(): String
+}
+
+inline class IC(val i: I): I by i
+
+fun box(): String {
+    val i = object : I {
+        override fun ok(): String = "OK"
+    }
+    var res = IC(i).ok()
+    if (res != "OK") return "FAIL: $res"
+    val ic: I = IC(i)
+    res = ic.ok()
+    return res
+}