style: Update z-index for connect dialog and overlay

ui/desktop/app/styles/app.scss

@@ -329,6 +329,8 @@
 // Dialog Detail
 // These styles are a Work In Progress. Expect changes (lots of them)
 .dialog-detail {
+  z-index: 6000;
+
   .rose-notification {
     border-left: 0;
     border-right: 0;
@@ -361,6 +363,11 @@
   }
 }
 
+// Overlay above everything - including notifications
+.rose-dialog-modal-overlay {
+  z-index: 5500;
+}
+
 // Reveal component (app/components/reveal)
 $chevron-up: url("data:image/svg+xml;utf-8,<svg viewBox='0 0 24 24' fill='%231563FF' xmlns='http://www.w3.org/2000/svg'><path fill-rule='evenodd' clip-rule='evenodd' d='M7.41 16L12 11.42L16.59 16L18 14.59L12 8.59L6 14.59L7.41 16Z' /></svg>");
 $chevron-down: url("data:image/svg+xml;utf-8,<svg viewBox='0 0 24 24' fill='%231563FF' xmlns='http://www.w3.org/2000/svg'><path fill-rule='evenodd' clip-rule='evenodd' d='M16.59 8.59L12 13.17L7.41 8.59L6 10L12 16L18 10L16.59 8.59Z' /></svg>");