New ieee754 arithmetic, Fix for KT-14651: Floating point comparisons shall operate according to IEEE754

compiler/testData/codegen/box/ieee754/dataClass.kt

@@ -0,0 +1,9 @@
+// IGNORE_BACKEND: JS
+data class Test(val z1: Double, val z2: Double?)
+
+fun box(): String {
+    val x = Test(Double.NaN, Double.NaN)
+    val y = Test(Double.NaN, Double.NaN)
+
+    return if (x == y) "OK" else "fail"
+}