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

compiler/testData/diagnostics/testsWithStdLib/shadowingInDestructuring.fir.kt

@@ -0,0 +1,10 @@
+data class XY(val x: Int, val y: Int)
+
+fun foo(list: List<XY>) {
+    for ((x1, y1) in list) {
+        for ((x2, y2) in list) {
+            if (x1 == y2 && x2 == y1) return
+        }
+        list.map { (x3, y3) -> x3 + y3 }
+    }
+}