feat: stream-chat-css updated

BREAKING CHANGE: Some changes were introduced to the CSS so you might have to update your custom CSS code

Author: szuperaz

docusaurus/docs/Angular/basics/upgrade-v3.mdx

@@ -11,6 +11,8 @@ Version 4 of stream-chat-angular brings a new and improved theming system. To us
 
 The old theme can still be used with the latest SDK versions however, you might need to update your custom CSS as some changes were introduced to theme-v1.
 
+Updating from theme-v1 to theme-v2 will require to rewrite your custom CSS code as the new theme has a new variable system, and all the components were restructured.
+
 Theme-v1 is now deprecated and will be removed in a future release.
 
 ## Theard layout

package-lock.json

@@ -117,7 +117,7 @@
     "@ngx-translate/core": "^13.0.0",
     "@ngx-translate/http-loader": "^6.0.0",
     "@popperjs/core": "^2.11.5",
-    "@stream-io/stream-chat-css": "2.9.0",
+    "@stream-io/stream-chat-css": "3.0.0-theming2.1",
     "@stream-io/transliterate": "^1.5.2",
     "angular-mentions": "^1.4.0",
     "dayjs": "^1.10.7",

package.json

@@ -51,7 +51,6 @@ export class AppComponent implements AfterViewInit {
       .subscribe((isThreadOpen) => (this.isThreadOpen = isThreadOpen));
     this.themeVersion = themeService.themeVersion;
     this.theme$ = themeService.theme$;
-    themeService.theme$.next('dark');
   }
 
   ngAfterViewInit(): void {