bug: c++11 `extern template` instantiation is treated as ERROR

[jiangyinzuo]

Did you check existing issues?

• I have read all the tree-sitter docs if it relates to using the parser
• I have searched the existing issues of tree-sitter-cpp

Tree-Sitter CLI Version, if relevant (output of tree-sitter --version)

No response

Describe the bug

extern template int Foo::foo<int>(); is treated as an ERROR, but actually it is valid.

Reference: https://en.cppreference.com/w/cpp/language/class_template

Steps To Reproduce/Bad Parse Tree

class Foo {
 public:
  template <typename T>
  T foo();
};

extern template int Foo::foo<int>();

  (declaration ; [6, 0] - [6, 36]
    (storage_class_specifier) ; [6, 0] - [6, 6]
    (ERROR ; [6, 7] - [6, 23]
      (identifier) ; [6, 16] - [6, 19]
      (identifier)) ; [6, 20] - [6, 23]
    type: (qualified_identifier ; [6, 23] - [6, 33]
      name: (template_type ; [6, 25] - [6, 33]
        name: (type_identifier) ; [6, 25] - [6, 28]
        arguments: (template_argument_list ; [6, 28] - [6, 33]
          (type_descriptor ; [6, 29] - [6, 32]
            type: (primitive_type))))) ; [6, 29] - [6, 32]
    declarator: (parenthesized_declarator ; [6, 33] - [6, 35]
      (identifier)))) ; [6, 34] - [6, 34]

Expected Behavior/Parse Tree

no ERROR.

Repro

class Foo {
 public:
  template <typename T>
  T foo();
};

extern template int Foo::foo<int>();