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

compiler/testData/diagnostics/tests/declarationChecks/RedeclarationsInMultiDecl.fir.kt

@@ -0,0 +1,15 @@
+class A {
+    operator fun component1() : Int = 1
+    operator fun component2() : Int = 2
+}
+
+fun a() {
+    val (a, a) = A()
+    val (x, y) = A();
+    val b = 1
+    use(b)
+    val (b, y) = A();
+}
+
+
+fun use(a: Any): Any = a