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

compiler/testData/diagnostics/tests/j+k/kt2641.fir.kt

@@ -0,0 +1,18 @@
+// !CHECK_TYPE
+
+package a
+
+import java.util.Iterator
+import java.lang.Comparable as Comp
+
+fun bar(any: Any): java.lang.Iterable<Int>? {
+    val a: java.lang.Comparable<String>? = null
+    val b: Iterable<Integer>
+    val c : Iterator<String>? = null
+
+    if (any is Iterator<*>) {
+        checkSubtype<Iterator<*>>(any)
+    }
+    any as Iterator<*>
+    return null
+}