fix: Update components and styles to work with >= HA 2026.2 (#2333)

Caution: Requires HA >= `2026.2`

- Closes #2329
- Closes #2332

src/scss/editor.scss

@@ -28,6 +28,8 @@
 .values {
   background: var(--secondary-background-color);
   display: grid;
+
+  grid-template-columns: minmax(0, 1fr);
 }
 // Space submenus from the next top-level options.
 .values + .option,