[FIR-TEST] Add new testdata generated after changes in previous commit

compiler/testData/diagnostics/tests/smartCasts/variables/accessorAndFunction.fir.kt

@@ -0,0 +1,23 @@
+class My {
+
+    val y: Int 
+        get() {
+            var x: Int?
+            x = 3
+            return x.hashCode()
+        }
+
+    fun test() {
+        var x: Int?
+        x = 2
+        x.hashCode()
+        fun bb() {
+           var x: Any?
+           x = 4
+           x.hashCode()
+        }
+        x = 4
+        // Really smart cast is possible but name shadowing by bb() prevents it
+        x.hashCode()
+    }
+}