'hasDefaultValue' needs to be adapted to support locating default values
in 'expect' functions, and this is not possible in module 'descriptors',
where it was originally declared. Therefore, move it to module
'resolution' and copy its current logic to a separate function
'declaresOrInheritsDefaultValue' which is used in 5 places.
'hasDefaultValue' itself is updated in subsequent commits.
Besides changing imports, also use a simpler declaresDefaultValue in
some places, which does not include default values inherited from
supertypes: this is OK for constructors, and in LazyJavaClassMemberScope
for functions from built-ins which do not have default argument values
at all
Alexander Udalov
ac5444ef7c