Update app.scss

replace `@import "components/alerts";`

apps/block_scout_web/assets/css/app.scss

@@ -74,6 +74,7 @@ $fa-font-path: "~@fortawesome/fontawesome-free/webfonts";
 @import "components/button";
 @import "components/table";
 @import "components/navbar";
+@import "components/alerts";
 
 @import "theme/dark-theme";
 
@@ -108,7 +109,6 @@ $fa-font-path: "~@fortawesome/fontawesome-free/webfonts";
 @import "components/btn_dropdown_line";
 @import "components/transaction";
 @import "components/api";
-@import "components/alerts";
 @import "components/verify_other_explorers";
 @import "components/errors";
 @import "components/log-search";