Do not show change log for fresh install

lib/ui/home/landing_page_widget.dart

@@ -6,6 +6,7 @@ import 'package:dots_indicator/dots_indicator.dart';
 import 'package:flutter/material.dart';
 import 'package:photos/core/configuration.dart';
 import 'package:photos/ente_theme_data.dart';
+import 'package:photos/services/update_service.dart';
 import 'package:photos/ui/account/email_entry_page.dart';
 import 'package:photos/ui/account/login_page.dart';
 import 'package:photos/ui/account/password_entry_page.dart';
@@ -152,6 +153,7 @@ class _LandingPageWidgetState extends State<LandingPageWidget> {
   }
 
   void _navigateToSignUpPage() {
+    UpdateService.instance.hideChangeLog().ignore();
     Widget page;
     if (Configuration.instance.getEncryptedToken() == null) {
       page = const EmailEntryPage();
@@ -178,6 +180,7 @@ class _LandingPageWidgetState extends State<LandingPageWidget> {
   }
 
   void _navigateToSignInPage() {
+    UpdateService.instance.hideChangeLog().ignore();
     Widget page;
     if (Configuration.instance.getEncryptedToken() == null) {
       page = const LoginPage();