feat: add event listener to uncheck sendPost checkbox when the Publis…

…h button is clicked

Potential concerns with this approach:

- A wait is needed, otherwise the notification won't send. This may because it takes the plugin time to structure the request and immediately unchecking it will mark it as "don't send". Generally, functionality should not be dependent on waiting
- The publish is targeted from the document body (`.editor-post-publish-button__button`) but this is brittle since we don't control the class values on the button

v3/onesignal-metabox/onesignal-metabox.js

@@ -32,4 +32,25 @@ window.addEventListener("DOMContentLoaded", () => {
     setDisplay(customiseWrap, customisePost.checked);
     setDisabled(customiseWrapChild, !customisePost.checked);
   });
+
+  // Watch for the Publish button to be added to the DOM
+  const observer = new MutationObserver((mutations, obs) => {
+    const publishButton = document.querySelector('.editor-post-publish-button__button');
+
+    if (publishButton) {
+      publishButton.addEventListener('click', function() {
+        setTimeout(() => {
+          if (sendPost && sendPost.checked) {
+            sendPost.click();
+          }
+        }, 1000);
+      });
+      obs.disconnect(); // Stop observing once we've found and handled the button
+    }
+  });
+
+  observer.observe(document.body, {
+    childList: true,
+    subtree: true
+  });
 });