Fixed multiple bugs in optimize imports for JS-target

#KT-13689 Fixed

idea/testData/editor/optimizeImports/common/DefaultObjectReference.kt.after

@@ -0,0 +1,9 @@
+package p
+
+import d.A
+import d.B.F
+
+fun main(args: Array<String>) {
+    F.c
+    A.c
+}