[analyzer] Expression.staticParameterElement should not be null for method with generics

[a14n]

Follow up on dart-lang/linter#2530

On the following example functionExpression.staticParameterElement.library is null for the generic case ff but not for f. Both should be set with a non-null variable.

class MyMap<K, V> {
  void f(void Function(int a) p) {}
  void ff(void Function(K a) p) {}
}
m() {
  MyMap().f((int? a) {}); // staticParameterElement.library is correctly set
  MyMap().ff((Object? a) {}); // staticParameterElement.library is null
}

(with analyzer-1.5.0)

/cc @scheglov

[a14n]

This issue still exist in analyzer-4.3.1. I just faced it again in dart-lang/linter#3568 (comment)