fix(layout): set document dir directly (#1164)

As pointed out https://stackoverflow.com/questions/54088021, renderer should be
used only for element.

src/framework/theme/components/layout/layout.component.ts

@@ -455,9 +455,7 @@ export class NbLayoutComponent implements AfterViewInit, OnDestroy {
  ngAfterViewInit() {
  this.layoutDirectionService.onDirectionChange()
  .pipe(takeWhile(() => this.alive))
- .subscribe(direction => {
- this.renderer.setProperty(this.document, 'dir', direction);
- });
+ .subscribe(direction => this.document.dir = direction);
 
  this.scrollService.onManualScroll()
  .pipe(takeWhile(() => this.alive))