IDEA-64713 Using a comma in code completion inserts a trailing space for method calls but not for variable names

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

@@ -0,0 +1,10 @@
+class AbcdClass {}
+class AbcdException extends Throwable {}
+
+class Foo {
+  {
+    int aaa;
+    int aab;
+    equals(aa<caret>)
+  }
+}