unify "Node interpreter" in all RC
(cherry picked from commit b1ee460)
WEB-10216 Good code is red: default value for named function parameter
(cherry picked from commit 97af2f9)
Dart formatter tests refactored
(cherry picked from commit c546291)
Dart comments formatting (part of WEB-8071)
(cherry picked from commit ca79c7a)
no Dart keywords completion in comments
(cherry picked from commit e1588fa)
no blank line between comment and declaration
(cherry picked from commit 73c3559)