Wait for DOMContentLoaded until checking whether localization should be disabled

Refs https://github.com/AUTOMATIC1111/stable-diffusion-webui/pull/9955#issuecomment-1546587143

javascript/localization.js

@@ -137,7 +137,11 @@ function download_localization() {
     document.body.removeChild(element);
 }
 
-if(hasLocalization()) {
+document.addEventListener("DOMContentLoaded", function () {
+    if (!hasLocalization()) {
+        return;
+    }
+
     onUiUpdate(function (m) {
         m.forEach(function (mutation) {
             mutation.addedNodes.forEach(function (node) {
@@ -146,26 +150,23 @@ if(hasLocalization()) {
         });
     })
 
+    processNode(gradioApp())
 
-    document.addEventListener("DOMContentLoaded", function () {
-        processNode(gradioApp())
+    if (localization.rtl) {  // if the language is from right to left,
+        (new MutationObserver((mutations, observer) => { // wait for the style to load
+            mutations.forEach(mutation => {
+                mutation.addedNodes.forEach(node => {
+                    if (node.tagName === 'STYLE') {
+                        observer.disconnect();
 
-        if (localization.rtl) {  // if the language is from right to left,
-            (new MutationObserver((mutations, observer) => { // wait for the style to load
-                mutations.forEach(mutation => {
-                    mutation.addedNodes.forEach(node => {
-                        if (node.tagName === 'STYLE') {
-                            observer.disconnect();
-
-                            for (const x of node.sheet.rules) {  // find all rtl media rules
-                                if (Array.from(x.media || []).includes('rtl')) {
-                                    x.media.appendMedium('all');  // enable them
-                                }
+                        for (const x of node.sheet.rules) {  // find all rtl media rules
+                            if (Array.from(x.media || []).includes('rtl')) {
+                                x.media.appendMedium('all');  // enable them
                             }
                         }
-                    })
-                });
-            })).observe(gradioApp(), { childList: true });
-        }
-    })
-}
+                    }
+                })
+            });
+        })).observe(gradioApp(), { childList: true });
+    }
+})