make notices appear above admin dash modal

src/components/global_notice_list/global_notice_list.vue

@@ -32,7 +32,7 @@
   top: calc(var(--navbar-height) + 0.5em);
   width: 100%;
   pointer-events: none;
-  z-index: var(--ZI_navbar_popovers);
+  z-index: var(--ZI_modals_popovers);
   display: flex;
   flex-direction: column;
   align-items: center;