#### Keep property/variable accessors tight (#17983 by @kovsu)

<!-- prettier-ignore -->
```less
// Input
.average(@x, @y) {
  @result: ((@x + @y) / 2);
}

div {
  padding: .average(16px, 50px)   [   @result   ];
}

// Prettier stable
.average(@x, @y) {
  @result: ((@x + @y) / 2);
}

div {
  padding: .average(16px, 50px) [ @result];
}

// Prettier main
.average(@x, @y) {
  @result: ((@x + @y) / 2);
}

div {
  padding: .average(16px, 50px)[@result];
}
```