Fix popup toast messages (Remove Flasher) (#16090)

* Remove flasher
Just use a bit of custom code to interface with toastr js
This is able to retain our custom theme and work properly

* Fix style issues

* Missed reference rename

* Remove test code :)

* Fix a missed rename

* Fix one more missed reference

* Fix typo

app/View/Components/Toast.php

@@ -0,0 +1,36 @@
+<?php
+
+namespace App\View\Components;
+
+use Closure;
+use Illuminate\Contracts\View\View;
+use Illuminate\Http\Request;
+use Illuminate\Session\SessionManager;
+use Illuminate\View\Component;
+
+class Toast extends Component
+{
+    public array $purifier_config = [
+        'HTML.Allowed' => 'a[href],b,i,ul,ol,li,h1,h2,h3,h4,br,p,pre',
+        'URI.DisableExternal' => true,
+    ];
+    public ?array $toasts;
+
+    /**
+     * Create a new component instance.
+     */
+    public function __construct(Request $request, SessionManager $session)
+    {
+        $this->purifier_config['URI.Host'] = $request->getHttpHost();
+        $this->toasts = $session->get('toasts');
+        $session->forget('toasts'); // to ward againsts double toasts
+    }
+
+    /**
+     * Get the view / contents that represent the component.
+     */
+    public function render(): View|Closure|string
+    {
+        return view('components.toast');
+    }
+}