[Bug]SassError: Expected whitespace.

### Issue type

* [ x] bug report

### Issue description

High version `sass:1.54.9` error

```
Module build failed (from ./node_modules/@angular-devkit/build-angular/node_modules/sass-loader/dist/cjs.js):
SassError: Expected whitespace.
╷
99 │ @media screen and(min-width: $layout-window-mode-max-width + 150px) {
│ ^
╵
node_modules/@nebular/theme/components/layout/_layout.component.theme.scss 99:22 @forward
node_modules/@nebular/theme/styles/global/_components.scss 7:1 @use
node_modules/@nebular/theme/styles/_globals.scss 9:1 @import
dashboard/styles.scss 8:9 root stylesheet

```