style: update SettingsDialog styles for improved UI

- Introduced background color and backdrop filter to the dialog wrapper for better visual appeal.

Author: atyrode

src/frontend/src/ui/SettingsDialog.scss

@@ -1,11 +1,18 @@
 .settings-dialog {
+
+  .control-label {
+    font-size: 0px;
+  }
+  
   &__wrapper {
     position: absolute;
     top: 0;
     left: 0;
     right: 0;
     bottom: 0;
     z-index: 1000;
+    background-color: rgba(0, 0, 0, 0.2);
+    backdrop-filter: blur(1px);
   }
 
   &__title-container {