💄 Add disabled style to the select element

Author: TCOTC

app/src/assets/scss/component/_select.scss

@@ -28,6 +28,10 @@
     @supports (appearance: base-select) {
       appearance: base-select;
 
+      &:disabled {
+        opacity: .68;
+      }
+
       &::picker(select) {
         appearance: base-select;
         color: var(--b3-theme-on-background);