Dredd failed to rewrite sizes of constant-sized arrays with `constexpr` qualifier

[JonathanFoo0523]

Applying dredd to

int main() {
  const int a = 4;
  static constexpr char b[a]{};
}

produce

int main() {
  const int a = __dredd_replace_expr_int_constant(4, 0);
  static constexpr char b[a]{};
}

which caused the error

error: variable length array declaration cannot have 'static' storage duration

This bug is similar in nature to issue #263 (addressed by PR #273 )

[afd]

void foo() {
  const int a = 4;
  constexpr char b[a]{};
}

After mutation this leads to:

error: constexpr variable cannot have non-literal type 'const char[a]'

void foo() {
  const int a = 4;
  static constexpr char b[a]{};
}

After mutation this leads to an error similar to the one above.