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

compiler/testData/diagnostics/tests/secondaryConstructors/valOrValAndModifiersInCtr.fir.kt

@@ -0,0 +1,7 @@
+// !DIAGNOSTICS: -UNUSED_PARAMETER
+class A {
+    constructor(
+        val x: Int, y: Int,
+        var z: Int,
+        public a: Int)
+}