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

compiler/testData/diagnostics/tests/shadowing/ShadowPropertyInFunction.fir.kt

@@ -0,0 +1,10 @@
+class RedefinePropertyInFunction() {
+
+    var i = 17
+    
+    fun f(): Int {
+        var i = 18
+        return i
+    }
+
+}