FIX: Reverts #17225 & #17223 (#17228)

* Revert "FIX: Defer removing the splash screen until the window load event fires (#17225)"

This reverts commit 6a61e855b3.

* Revert "FIX: Remove splash screen in no-js view (#17223)"

This reverts commit 5257cae1b8.

app/assets/javascripts/discourse/app/app.js

@@ -82,14 +82,8 @@ const Discourse = Application.extend({
       });
     });
 
-    window.addEventListener(
-      "load",
-      () => {
-        // The app booted. Remove the splash screen
-        document.querySelector("#d-splash")?.remove();
-      },
-      { once: true }
-    );
+    // The app booted. Remove the splash screen
+    document.querySelector("#d-splash")?.remove();
   },
 
   _registerPluginCode(version, code) {

app/views/common/_discourse_splash.html.erb

@@ -3,7 +3,7 @@
   <style>
     html {
       background: var(--secondary);
-      overflow-y: hidden !important;
+      overflow: hidden !important;
     }
 
     #d-splash {
@@ -29,7 +29,6 @@
       animation: fade-in 0.5s ease-in-out;
       animation-delay: 2.5s;
       animation-fill-mode: forwards;
-      color: var(--primary);
     }
 
     #d-splash .preloader-text:after {
@@ -80,17 +79,5 @@
   <div class="preloader-text">
     <span> <%= I18n.t("js.preloader_text") %> </span>
   </div>
-
-  <noscript>
-    <style>
-      html {
-        overflow-y: initial !important;
-      }
-
-      #d-splash {
-        display: none;
-      }
-    </style>
-  </noscript>
 </section>
 <%- end %>