Hide the flat rate when freeshipping auto selected, woocommerce cart

<script>
  // Function to check for free shipping and hide non-free options
  function checkFreeShipping() {
    // Find all shipping option containers on the cart page
    var shippingContainers = document.querySelectorAll('.wc-block-components-radio-control');
    if (!shippingContainers.length) return; // Exit early if container(s) don't exist

    shippingContainers.forEach(function(container) {
      // Get all the shipping option labels within the container
      var labels = container.querySelectorAll('label');
      var freeShippingSelected = false;

      // First, check if any free shipping option is selected.
      labels.forEach(function(label) {
        var input = label.querySelector('input[type="radio"]');
        if (input && input.value.indexOf('free_shipping') !== -1) {
          // Check if the input is selected or if its parent label has the "checked" class
          if (input.checked || label.classList.contains('wc-block-components-radio-control__option-checked')) {
            freeShippingSelected = true;
          }
        }
      });

      // If free shipping is selected, hide all non-free shipping options.
      if (freeShippingSelected) {
        labels.forEach(function(label) {
          var input = label.querySelector('input[type="radio"]');
          if (input && input.value.indexOf('free_shipping') === -1) {
            label.style.display = 'none';
          }
        });
      } else {
        // Otherwise, ensure all shipping options are visible.
        labels.forEach(function(label) {
          label.style.display = '';
        });
      }
    });
  }

  // Set up a mutation observer on the shipping container
  function observeShippingContainer(container) {
    var observer = new MutationObserver(function(mutationsList) {
      checkFreeShipping();
    });
    observer.observe(container, { childList: true, subtree: true });
  }

  // Wait for the shipping container to be added if not present initially
  function waitForShippingContainer() {
    var container = document.querySelector('.wc-block-components-radio-control');
    if (container) {
      observeShippingContainer(container);
      checkFreeShipping();
      return;
    }
    // If container is not found, observe the document body for additions
    var bodyObserver = new MutationObserver(function(mutationsList, obs) {
      var container = document.querySelector('.wc-block-components-radio-control');
      if (container) {
        observeShippingContainer(container);
        checkFreeShipping();
        obs.disconnect();
      }
    });
    bodyObserver.observe(document.body, { childList: true, subtree: true });
  }

  // Use event delegation to listen for changes on shipping radio inputs.
  // This ensures that even if the DOM changes dynamically the event listener remains active.
  document.body.addEventListener('change', function(event) {
    if (event.target && event.target.matches('.wc-block-components-radio-control input[type="radio"]')) {
      // Slight delay to allow asynchronous UI updates
      setTimeout(checkFreeShipping, 100);
    }
  });

  // Initialize when the DOM is ready
  document.addEventListener('DOMContentLoaded', function() {
    checkFreeShipping();
    waitForShippingContainer();
  });
</script>