fix(FN-1325): make new task dialog take up full height on mobile

- Add height: 100dvh and max-height: 100dvh to new-task-modal for mobile viewport support
- Fixes dialog not filling the mobile viewport height on smaller screens

packages/dashboard/app/styles.css

@@ -6082,6 +6082,8 @@ body {
   .modal-lg {
     width: 100%;
     max-width: 100%;
+    height: 100vh;
+    height: 100dvh;
     max-height: 100vh;
     max-height: 100dvh;
     border-radius: 0;