Fixed multiple bugs in optimize imports for JS-target

#KT-13689 Fixed

idea/testData/editor/optimizeImports/jvm/CallableReference.kt

@@ -0,0 +1,6 @@
+import javax.swing.SwingUtilities.invokeLater
+
+fun test() {
+    val ref1 = Thread::currentThread
+    val ref2 = ::invokeLater
+}