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

compiler/testData/diagnostics/tests/dataFlow/local/LocalClassDefaultParameters.fir.kt

@@ -0,0 +1,8 @@
+fun test(x: Any) {
+  if (x !is String) return
+
+  class Local(s: String = x) {
+    fun foo(s: String = x): String = s
+  }
+}
+