fix(editor): Remove inline script and style from index.html (#17531)

Co-authored-by: Csaba Tuncsik <csaba@n8n.io>
Co-authored-by: cubic-dev-ai[bot] <191113872+cubic-dev-ai[bot]@users.noreply.github.com>

packages/frontend/editor-ui/public/static/posthog.init.js

@@ -0,0 +1,41 @@
+!(function (t, e) {
+	var o, n, p, r;
+	e.__SV ||
+		((window.posthog = e),
+		(e._i = []),
+		(e.init = function (i, s, a) {
+			function g(t, e) {
+				var o = e.split('.');
+				2 == o.length && ((t = t[o[0]]), (e = o[1])),
+					(t[e] = function () {
+						t.push([e].concat(Array.prototype.slice.call(arguments, 0)));
+					});
+			}
+			((p = t.createElement('script')).type = 'text/javascript'),
+				(p.async = !0),
+				(p.src = s.api_host + '/static/array.js'),
+				(r = t.getElementsByTagName('script')[0]).parentNode.insertBefore(p, r);
+			var u = e;
+			for (
+				void 0 !== a ? (u = e[a] = []) : (a = 'posthog'),
+					u.people = u.people || [],
+					u.toString = function (t) {
+						var e = 'posthog';
+						return 'posthog' !== a && (e += '.' + a), t || (e += ' (stub)'), e;
+					},
+					u.people.toString = function () {
+						return u.toString(1) + '.people (stub)';
+					},
+					o =
+						'capture identify alias people.set people.set_once set_config register register_once unregister opt_out_capturing has_opted_out_capturing opt_in_capturing reset isFeatureEnabled getFeatureFlag onFeatureFlags reloadFeatureFlags'.split(
+							' ',
+						),
+					n = 0;
+				n < o.length;
+				n++
+			)
+				g(u, o[n]);
+			e._i.push([i, s, a]);
+		}),
+		(e.__SV = 1));
+})(document, window.posthog || []);