Merge pull request #20856 from maskalek/issue-20805

Set selected language to html at application initializing

npm/ng-packs/packages/core/src/lib/services/session-state.service.ts

@@ -1,4 +1,5 @@
-import { Injectable } from '@angular/core';
+import { Injectable, inject } from '@angular/core';
+import { DOCUMENT } from '@angular/common';
 import compare from 'just-compare';
 import { filter, take } from 'rxjs/operators';
 import { Session } from '../models/session';
@@ -12,6 +13,7 @@ import { AbpLocalStorageService } from './local-storage.service';
 })
 export class SessionStateService {
   private readonly store = new InternalStore({} as Session.State);
+  protected readonly document = inject(DOCUMENT);
 
   private updateLocalStorage = () => {
     this.localStorageService.setItem('abpSession', JSON.stringify(this.store.state));
@@ -47,9 +49,8 @@ export class SessionStateService {
         if (lang.includes(';')) {
           lang = lang.split(';')[0];
         }
-        if (appLanguage !== lang) {
+        
-          this.setLanguage(lang);
+        this.setLanguage(lang);
-        }
       });
   }
 
@@ -84,9 +85,15 @@ export class SessionStateService {
   }
 
   setLanguage(language: string) {
-    if (language === this.store.state.language) return;
+    const currentLanguage = this.store.state.language;
+
+    if (language !== currentLanguage) {
+      this.store.patch({ language });
+    }
 
-    this.store.patch({ language });
+    const currentAttribute = this.document.documentElement.getAttribute('lang');
-    document.documentElement.setAttribute('lang', language);
+    if (language !== currentAttribute) {
+      this.document.documentElement.setAttribute('lang', language);
+    }
   }
 }