Fix conflict between type_alias_statement and primary_expression

[vanessa-rodrigues]

The following code was being parsed as having 2 type_alias_statements:

old_mod = type(estimator).__module__
type(estimator).__module__ = "notsklearn"
type(estimator).__module__ = old_mod

(module [0, 0] - [3, 0]
  (assignment [0, 0] - [0, 36]
    left: (identifier [0, 0] - [0, 7])
    right: (attribute [0, 10] - [0, 36]
      object: (call [0, 10] - [0, 25]
        function: (identifier [0, 10] - [0, 14])
        arguments: (argument_list [0, 14] - [0, 25]
          (identifier [0, 15] - [0, 24])))
      attribute: (identifier [0, 26] - [0, 36])))
  (type_alias_statement [1, 0] - [1, 41]
    left: (type [1, 4] - [1, 26]
      (attribute [1, 4] - [1, 26]
        object: (parenthesized_expression [1, 4] - [1, 15]
          (identifier [1, 5] - [1, 14]))
        attribute: (identifier [1, 16] - [1, 26])))
    right: (type [1, 29] - [1, 41]
      (string [1, 29] - [1, 41]
        (string_start [1, 29] - [1, 30])
        (string_content [1, 30] - [1, 40])
        (string_end [1, 40] - [1, 41]))))
  (type_alias_statement [2, 0] - [2, 36]
    left: (type [2, 4] - [2, 26]
      (attribute [2, 4] - [2, 26]
        object: (parenthesized_expression [2, 4] - [2, 15]
          (identifier [2, 5] - [2, 14]))
        attribute: (identifier [2, 16] - [2, 26])))
    right: (type [2, 29] - [2, 36]
      (identifier [2, 29] - [2, 36]))))

This PR fixes that. Additionally, it adds some fields throughout the grammar and fix a typo (?) on the type_parameters rule, renaming it from type_parameter.