don't overwrite dots when finishing completion by ., since it's irritating

java/java-tests/testData/codeInsight/completion/normal/NoDotOverwrite_after.java

@@ -0,0 +1,8 @@
+public class JavaClass {
+  Object magic() {}
+  Object magic2() {}
+
+  void foo() {
+    magic().<caret>.aaa
+  }
+}