[FIR] Add diagnostics for object related problems

compiler/testData/diagnostics/tests/inner/referenceToSelfInLocal.fir.kt

@@ -1,30 +0,0 @@
-// !DIAGNOSTICS: -UNUSED_VARIABLE
-// KT-4351 Cannot resolve reference to self in init of class local to function
-
-fun f() {
-    class MyClass() {
-        init {
-            val x: MyClass = MyClass()
-        }
-
-        fun member() {
-            val x: MyClass = MyClass()
-        }
-    }
-
-    object MyObject {
-        init {
-            val obj: MyObject = MyObject
-        }
-    }
-
-    val x: MyClass = MyClass()
-}
-
-val closure = {
-    class MyClass {
-        init {
-            val x: MyClass = MyClass()
-        }
-    }
-}

compiler/testData/diagnostics/tests/inner/referenceToSelfInLocal.kt

@@ -1,3 +1,4 @@
+// FIR_IDENTICAL
 // !DIAGNOSTICS: -UNUSED_VARIABLE
 // KT-4351 Cannot resolve reference to self in init of class local to function