How can I make an iframe behave like other media elements in a horizontal scrolling area?

This is my code:

$(document).ready(function() {
  $('.scrollable-area').on('wheel', function(e) {
    var scrollLeft = $(this).scrollLeft();
    var width = $(this).get(0).scrollWidth - $(this).width();
    var deltaY = e.originalEvent.deltaY;
    var deltaX = e.originalEvent.deltaX;
    var newScrollLeft = scrollLeft + deltaY + deltaX;
    if ((deltaY > 0 && newScrollLeft < width) ||
      (deltaY < 0 && newScrollLeft > 0)) {
      e.preventDefault();
    }
    if (newScrollLeft <= 0) {
      $(this).scrollLeft(0);
    } else if (newScrollLeft >= width) {
      $(this).scrollLeft(width);
    } else {
      $(this).scrollLeft(newScrollLeft);
    }
  });
});

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

.gallery-container {
  position: relative;
  width: 100%;
  height: 90vh;
  background-color: yellow;
  overflow: hidden;
}

.scrollable-area {
  width: 100%;
  height: 100%;
  overflow-x: auto;
}

.gallery-items {
  display: flex;
  min-width: 100%;
  height: 100%;
}

.gallery-item {
  flex: 0 0 auto;
  height: 100%;
  display: flex;
}

.gallery-item img {
  max-width: 100%;
  height: auto;
  object-fit: contain;
}

.gallery-item iframe {
  background-color: blue;
  width: auto;
  width: 800px;
}

<script src="https://code.jquery.com/jquery-3.7.0.min.js"></script>

<div class="gallery-container">
  <div class="scrollable-area">
    <div class="gallery-items">
      <div class="gallery-item">
        <img src="https://upload.wikimedia.org/wikipedia/commons/1/16/Appearance_of_sky_for_weather_forecast%2C_Dhaka%2C_Bangladesh.JPG">
      </div>
      <div class="gallery-item">
        <img src="https://upload.wikimedia.org/wikipedia/commons/d/da/Sky_landscape.jpg">
      </div>
      <div class="gallery-item">
        <iframe src="https://player.vimeo.com/video/584985260" frameborder="0" allow="fullscreen"></iframe>
      </div>
      <div class="gallery-item">
        <img src="https://upload.wikimedia.org/wikipedia/commons/1/16/Appearance_of_sky_for_weather_forecast%2C_Dhaka%2C_Bangladesh.JPG">
      </div>
    </div>
  </div>
</div>

If you have the cursor on the media gallery and scroll down normally, you first scroll horizontally through the gallery. That's on purpose. However, it stops when an iframe is included. I've already tried to prevent the pointer events during scrolling, but it lead to some other issues like it was not possible anymore to click the play button of a video.

Also, it would be cool to find a way to always resize the iframe to that of the video and overall fit the height of the horizontal gallery. Does anyone know how this works?

from How can I make an iframe behave like other media elements in a horizontal scrolling area?