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

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

@@ -0,0 +1,16 @@
+// !CHECK_TYPE
+
+interface A
+interface B : A
+
+fun foo1(a: A, b: B): Boolean {
+    val result = (a as B) == b
+    checkSubtype<B>(a)
+    return result
+}
+
+fun foo2(a: A, b: B): Boolean {
+    val result = b == (a as B)
+    checkSubtype<B>(a)
+    return result
+}