first commit

media/plg_captcha_recaptcha_invisible/css/recaptcha_invisible.css

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+.grecaptcha-badge {
+  z-index: 999999;
+}

media/plg_captcha_recaptcha_invisible/css/recaptcha_invisible.min.css

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+.grecaptcha-badge{z-index:999999}

media/plg_captcha_recaptcha_invisible/js/recaptcha.js

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+/**
+ * @package     Joomla.JavaScript
+ * @copyright   (C) 2019 Open Source Matters, Inc. <https://www.joomla.org>
+ * @license     GNU General Public License version 2 or later; see LICENSE.txt
+ */
+
+((window, document) => {
+
+  window.JoomlainitReCaptchaInvisible = () => {
+    const elements = [].slice.call(document.getElementsByClassName('g-recaptcha'));
+    const optionKeys = ['sitekey', 'badge', 'size', 'tabindex', 'callback', 'expired-callback', 'error-callback'];
+    elements.forEach(element => {
+      let options = {};
+      if (element.dataset) {
+        options = element.dataset;
+      } else {
+        optionKeys.forEach(key => {
+          const optionKeyFq = `data-${optionKeys[key]}`;
+          if (element.hasAttribute(optionKeyFq)) {
+            options[optionKeys[key]] = element.getAttribute(optionKeyFq);
+          }
+        });
+      }
+
+      // Set the widget id of the recaptcha item
+      element.setAttribute('data-recaptcha-widget-id', window.grecaptcha.render(element, options));
+
+      // Execute the invisible reCAPTCHA
+      window.grecaptcha.execute(element.getAttribute('data-recaptcha-widget-id'));
+    });
+  };
+})(window, document);

media/plg_captcha_recaptcha_invisible/js/recaptcha.min.js

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+((t,e)=>{t.JoomlainitReCaptchaInvisible=()=>{const a=[].slice.call(e.getElementsByClassName("g-recaptcha")),c=["sitekey","badge","size","tabindex","callback","expired-callback","error-callback"];a.forEach((e=>{let a={};e.dataset?a=e.dataset:c.forEach((t=>{const i=`data-${c[t]}`;e.hasAttribute(i)&&(a[c[t]]=e.getAttribute(i))})),e.setAttribute("data-recaptcha-widget-id",t.grecaptcha.render(e,a)),t.grecaptcha.execute(e.getAttribute("data-recaptcha-widget-id"))}))}})(window,document);

media/plg_captcha_recaptcha_invisible/scss/recaptcha_invisible.scss

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+.grecaptcha-badge {
+  z-index: 999999;
+}