Don't recognize IrVariable as declaration scope in inlining

#KT-42815 Fixed

compiler/testData/codegen/boxInline/anonymousObject/kt42815.kt

@@ -0,0 +1,21 @@
+// FILE: 1.kt
+package test
+
+inline fun myRun(x: () -> String) = x()
+
+// FILE: 2.kt
+// NO_CHECK_LAMBDA_INLINING
+import test.*
+
+class C {
+    val x: String
+    init {
+        val y = myRun { { "OK" }() }
+        x = y
+    }
+
+    constructor(y: Int)
+    constructor(y: String)
+}
+
+fun box(): String = C("").x