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

compiler/testData/diagnostics/tests/dataFlowInfoTraversal/For.fir.kt

@@ -0,0 +1,22 @@
+fun bar(x: Int): Int = x + 1
+
+fun foo() {
+    val x: Int? = null
+    val a = Array<Int>(3, {0})
+
+    for (p in a) {
+        bar(x)
+        if (x == null) continue
+        bar(x)
+        for (q in a) {
+            bar(x)
+            if (x == null) bar(x)
+        }
+    }
+
+    for (p in a) {
+        bar(x)
+        if (x == null) break
+        bar(x)
+    }
+}