feat: clean up browse shared layout logic + introduce queuing (#6030)

* feat: clean up edge case behaviour and add queued to install logic

* fix: remove version choice modal

* feat: queued flow

* feat: standardize headers in app on proj pages

* fix: clear btn

* feat: installing floating popup

* fix: lint

* fix: onboarding/reset logic change for modpacks

* qa: big ol qa

* fix: lint

* fix: lint

---------

Co-authored-by: Prospector <6166773+Prospector@users.noreply.github.com>

apps/app-frontend/src/App.vue

@@ -1571,11 +1571,15 @@ provideAppUpdateDownloadProgress(appUpdateDownload)
 
 .app-grid-navbar {
 	grid-area: nav;
+	position: relative;
+	z-index: 2;
 }
 
 .app-grid-statusbar {
 	grid-area: status;
 	padding-right: var(--window-controls-width, 0px);
+	position: relative;
+	z-index: 2;
 }
 
 [data-tauri-drag-region-exclude] {
@@ -1665,7 +1669,7 @@ provideAppUpdateDownloadProgress(appUpdateDownload)
 }
 
 .app-contents::before {
-	z-index: 1;
+	z-index: 30;
 	content: '';
 	position: fixed;
 	left: var(--left-bar-width);