Add release headers service, runtime-aware API header handling, and i18n updates for release configuration

- Implement `releaseHeaders.js` to manage release-related HTTP headers.
- Update requests to include runtime-based release headers.
- Extend i18n phrases across multiple locales for release runtime and configuration labels.
- Enhance unit tests for header building and API availability error handling.

src/services/installAxiosRequestQueue.js

@@ -1,6 +1,6 @@
 import axios from "axios";
 import { enqueueRequest } from "@/services/requestQueue.js";
-import { rewriteReleaseApiUrl } from "@/services/releaseTimeline.js";
+import { buildCurrentReleaseHeaders, rewriteReleaseApiUrl } from "@/services/releaseTimeline.js";
 
 let requestInterceptorId = null;
 
@@ -36,6 +36,12 @@ export const installAxiosRequestQueue = () => {
     if (config?.__skipReleaseApiRewrite !== true && config?.baseURL) {
       config.baseURL = rewriteReleaseApiUrl(config.baseURL);
     }
+    if (config?.__skipReleaseApiRewrite !== true) {
+      config.headers = {
+        ...buildCurrentReleaseHeaders(),
+        ...(config.headers || {}),
+      };
+    }
 
     if (isQueueBypassed(config) || config?.__queueAdapterWrapped) {
       return config;