This makes sense because this mode is the default in the production
compiler. Forgetting to enable it where necessary led to different
bizarre test failures, see for example changes around 3fee84b966 and
KT-34826
The root problem is the fact that ConstantExpressionEvaluator returns
null for values such as infinity and NaN loaded from cls psi (see
IDEA-207252). This commit simply reverts a part of 8ab9226805 where we
started to compute default values more often than needed. In
LazyJavaClassMemberScope, we only need to check whether or not there
_is_ a default value, not compute its value.
#KT-29792 Fixed
