JS backend: fix KT-5738 JS backend: result of toByte() should be in the range of bytes

#KT-5738 Fixed

js/js.translator/testData/number/cases/conversionsWithTruncation.kt

@@ -0,0 +1,27 @@
+package foo
+
+fun box(): String {
+
+    assertEquals(65, 321.0.toByte())
+    assertEquals(-56, 200.0.toByte())
+
+    assertEquals(65, 321.0f.toByte())
+    assertEquals(-56, 200.0f.toByte())
+
+    assertEquals(65, 321.toByte())
+    assertEquals(-56, 200.toByte())
+
+    assertEquals(65, (321: Short).toByte())
+    assertEquals(-56, (200: Short).toByte())
+
+    assertEquals(-1, 65535.0.toShort())
+    assertEquals(-1, 65535.0f.toShort())
+    assertEquals(-1, 65535.toShort())
+
+    assertEquals(65535, 65535.2.toInt())
+    assertEquals(23, 23.6f.toInt())
+    assertEquals(-12, -12.4.toShort())
+    assertEquals(-12, -12.4.toByte())
+
+    return "OK"
+}