Support inlining internal functions to friend modules in JS BE

There's one exception: if an inline internal function calls
private function, this will fail at run time.

js/js.tests/test/org/jetbrains/kotlin/js/test/semantics/BoxJsTestGenerated.java

@@ -4754,6 +4754,12 @@ public class BoxJsTestGenerated extends AbstractBoxJsTest {
             doTest(fileName);
         }
 
+        @TestMetadata("internalFriend.kt")
+        public void testInternalFriend() throws Exception {
+            String fileName = KotlinTestUtils.navigationMetadata("js/js.translator/testData/box/inlineMultiModule/internalFriend.kt");
+            doTest(fileName);
+        }
+
         @TestMetadata("internalNameClash.kt")
         public void testInternalNameClash() throws Exception {
             String fileName = KotlinTestUtils.navigationMetadata("js/js.translator/testData/box/inlineMultiModule/internalNameClash.kt");