fix: cmdk not changing theme if active theme is custom-theme (#1842)

apps/app/components/command-palette/change-interface-theme.tsx

@@ -7,6 +7,8 @@ import { useTheme } from "next-themes";
 import { SettingIcon } from "components/icons";
 import userService from "services/user.service";
 import useUser from "hooks/use-user";
+// helper
+import { unsetCustomCssVariables } from "helpers/theme.helper";
 
 type Props = {
   setIsPaletteOpen: Dispatch<SetStateAction<boolean>>;
@@ -22,6 +24,8 @@ export const ChangeInterfaceTheme: React.FC<Props> = ({ setIsPaletteOpen }) => {
   const updateUserTheme = (newTheme: string) => {
     if (!user) return;
 
+    unsetCustomCssVariables();
+
     setTheme(newTheme);
 
     mutateUser((prevData) => {