Do not cast arguments of binary operation to expected type for byte and short

compiler/testData/codegen/box/binaryOp/infixCallNullable.kt

@@ -0,0 +1,17 @@
+fun box(): String {
+    val a1: Byte? = 1 plus 1
+    val a2: Short? = 1 plus 1
+    val a3: Int? = 1 plus 1
+    val a4: Long? = 1 plus 1
+    val a5: Double? = 1.0 plus 1
+    val a6: Float? = 1f plus 1
+
+    if (a1!! != 2.toByte()) return "fail 1"
+    if (a2!! != 2.toShort()) return "fail 2"
+    if (a3!! != 2) return "fail 3"
+    if (a4!! != 2L) return "fail 4"
+    if (a5!! != 2.0) return "fail 5"
+    if (a6!! != 2f) return "fail 6"
+
+    return "OK"
+}