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

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

@@ -0,0 +1,15 @@
+// !CHECK_TYPE
+
+infix fun Int.compareTo(o: Int) = 0
+
+fun foo(a: Number): Int {
+    val result = (a as Int) compareTo a
+    checkSubtype<Int>(a)
+    return result
+}
+
+fun bar(a: Number): Int {
+    val result = 42 compareTo (a as Int)
+    checkSubtype<Int>(a)
+    return result
+}