FIR2IR: create local classes on the fly properly

compiler/testData/ir/irText/firProblems/localClassUsedBeforeDeclaration.kt.txt

@@ -0,0 +1,31 @@
+fun box(): String {
+  return { // BLOCK
+    local class <no name provided> {
+      constructor() /* primary */ {
+        super/*Any*/()
+        /* <init>() */
+
+      }
+
+      val a: A
+        field = <this>.A(ok = "OK")
+        get
+
+      local inner class A {
+        constructor(ok: String) /* primary */ {
+          super/*Any*/()
+          /* <init>() */
+
+        }
+
+        val ok: String
+          field = ok
+          get
+
+      }
+
+    }
+
+    <no name provided>()
+  }.<get-a>().<get-ok>()
+}