web: fix SiteShell not being full height

web/src/authentik.css

@@ -85,10 +85,6 @@ select[multiple] {
     z-index: auto !important;
 }
 
-.pf-c-page__main {
-    display: block;
-}
-
 @media (prefers-color-scheme: dark) {
     :root {
         --ak-dark-foreground: #fafafa;

web/src/elements/router/RouterOutlet.ts

@@ -65,7 +65,7 @@ export class RouterOutlet extends LitElement {
             console.debug(`authentik/router: route "${activeUrl}" not defined, defaulting to shell`);
             const route = new Route(
                 RegExp(""),
-                html`<ak-site-shell url=${activeUrl}>
+                html`<ak-site-shell class="pf-c-page__main" url=${activeUrl}>
                     <div slot="body"></div>
                 </ak-site-shell>`
             );