AK: Vector use Traits<T>::equals in find

Use Traits<T>::equals for equality checking in search
functions instead of  operator==

AK/Vector.h

@@ -249,7 +249,7 @@ class Vector {
  bool contains_slow(const T& value) const
  {
  for (size_t i = 0; i < size(); ++i) {
- if (at(i) == value)
+ if (Traits<T>::equals(at(i), value))
  return true;
  }
  return false;
@@ -612,18 +612,18 @@ class Vector {
 
  ConstIterator find(const T& value) const
  {
- return find([&](auto& other) { return value == other; });
+ return find([&](auto& other) { return Traits<T>::equals(value, other); });
  }
 
  Iterator find(const T& value)
  {
- return find([&](auto& other) { return value == other; });
+ return find([&](auto& other) { return Traits<T>::equals(value, other); });
  }
 
  Optional<size_t> find_first_index(const T& value)
  {
  for (size_t i = 0; i < m_size; ++i) {
- if (value == at(i))
+ if (Traits<T>::equals(value, at(i)))
  return i;
  }
  return {};