JS: move expressions test to box tests

js/js.translator/testData/box/expression/when/whenWithCharRangeClause.kt

@@ -0,0 +1,14 @@
+// see KT-7683
+// WhenTranslator must recognize KtWhenConditionInRange
+package foo
+
+fun box(): String {
+    var result = testFun('1') + testFun('Q') + testFun('z')
+    return if (result == "misshitmiss") "OK" else "fail"
+}
+fun testFun(index: Char): String {
+    return when (index) {
+        in 'A'..'Z' -> "hit"
+        else -> "miss"
+    }
+}