fix: function body comments.

js/js.translator/testData/box/jsCode/comments.kt

@@ -1,6 +1,8 @@
 // EXPECTED_REACHABLE_NODES: 1282
 // CHECK_COMMENT_EXISTS: text="Single line comment" multiline=false
 // CHECK_COMMENT_EXISTS: text="Multi line comment" multiline=true
+// CHECK_COMMENT_EXISTS: text="Single line comment inside function" multiline=false
+// CHECK_COMMENT_EXISTS: text="Multi line comment inside function" multiline=true
 // CHECK_COMMENT_EXISTS: text="After call single line comment" multiline=false
 // CHECK_COMMENT_EXISTS: text="After call multi line comment" multiline=true
 // CHECK_COMMENT_DOESNT_EXIST: text="random position comment 1" multiline=true
@@ -11,7 +13,11 @@ package foo
 
 fun box(): String {
     js("""
-        function foo() {}
+        function foo() {
+            // Single line comment inside function
+            Object;
+            /*Multi line comment inside function*/
+        }
         
         // Single line comment
         foo();