Asserts that annotation named parameters use Name, which is different from the
normal "scoped_name =" lexing, which uses Name.Constant.

---input---
@mod::anno(value = const_a) const short const_b = const_a;

---tokens---
'@mod::anno'  Name.Decorator
'('           Punctuation
'value'       Name
' '           Text.Whitespace
'='           Punctuation
' '           Text.Whitespace
'const_a'     Name
')'           Punctuation
' '           Text.Whitespace
'const'       Keyword.Declaration
' '           Text.Whitespace
'short'       Keyword.Type
' '           Text.Whitespace
'const_b'     Name.Constant
' '           Text.Whitespace
'='           Operator
' '           Text.Whitespace
'const_a'     Name
';'           Punctuation
'\n'          Text.Whitespace