refactor: refactor date handling across components to use date-fns and Intl.DateTimeFormat

- Replaced moment.js usage with Intl.DateTimeFormat for date formatting in various components.
- Introduced utility functions `normalizeDateLocale` and `formatWithIntl` for locale normalization and date formatting.
- Updated PlaylistSwitcher, RecentPlaylists, ContentCard, EPG components, and MultiEpgContainer to utilize the new date formatting approach.
- Removed moment-date pipe and related tests, simplifying date handling logic.
- Ensured all date displays respect the current locale settings.

Entire-Checkpoint: 271bd0162027

apps/web/src/app/app-date-locales.ts

@@ -0,0 +1,46 @@
+import { registerLocaleData } from '@angular/common';
+import localeAr from '@angular/common/locales/ar';
+import localeArMa from '@angular/common/locales/ar-MA';
+import localeBe from '@angular/common/locales/be';
+import localeDe from '@angular/common/locales/de';
+import localeEl from '@angular/common/locales/el';
+import localeEs from '@angular/common/locales/es';
+import localeFr from '@angular/common/locales/fr';
+import localeIt from '@angular/common/locales/it';
+import localeJa from '@angular/common/locales/ja';
+import localeKo from '@angular/common/locales/ko';
+import localeNl from '@angular/common/locales/nl';
+import localePl from '@angular/common/locales/pl';
+import localePt from '@angular/common/locales/pt';
+import localeRu from '@angular/common/locales/ru';
+import localeTr from '@angular/common/locales/tr';
+import localeZh from '@angular/common/locales/zh';
+import localeZhHant from '@angular/common/locales/zh-Hant';
+
+let localesRegistered = false;
+
+export function registerAppDateLocales(): void {
+    if (localesRegistered) {
+        return;
+    }
+
+    registerLocaleData(localeAr, 'ar');
+    registerLocaleData(localeArMa, 'ar-MA');
+    registerLocaleData(localeBe, 'be');
+    registerLocaleData(localeDe, 'de');
+    registerLocaleData(localeEl, 'el');
+    registerLocaleData(localeEs, 'es');
+    registerLocaleData(localeFr, 'fr');
+    registerLocaleData(localeIt, 'it');
+    registerLocaleData(localeJa, 'ja');
+    registerLocaleData(localeKo, 'ko');
+    registerLocaleData(localeNl, 'nl');
+    registerLocaleData(localePl, 'pl');
+    registerLocaleData(localePt, 'pt');
+    registerLocaleData(localeRu, 'ru');
+    registerLocaleData(localeTr, 'tr');
+    registerLocaleData(localeZh, 'zh');
+    registerLocaleData(localeZhHant, 'zh-Hant');
+
+    localesRegistered = true;
+}

apps/web/src/main.ts

@@ -1,7 +1,10 @@
 import { bootstrapApplication } from '@angular/platform-browser';
+import { registerAppDateLocales } from './app/app-date-locales';
 import { AppComponent } from './app/app.component';
 import { appConfig } from './app/app.config';
 
+registerAppDateLocales();
+
 bootstrapApplication(AppComponent, appConfig).catch((err) =>
     console.error(err)
 );