fix(grid styling): add height 100%

Author: multignite

src/app/hierarchical-grid/hierarchical-grid-column-pinning/hierarchical-grid-toolbar-pinning.component.html

@@ -1,6 +1,6 @@
 <div class="grid__wrapper">
 <igx-hierarchical-grid [igxPreventDocumentScroll]="true"  class="hierarchicalGrid" [data]="localdata" [autoGenerate]="false"
-    [height]="'480px'" [width]="'100%'" #hierarchicalGrid>
+    [height]="'100%'" [width]="'100%'" #hierarchicalGrid>
         <igx-grid-toolbar>
             <igx-grid-toolbar-actions>
                 <igx-grid-toolbar-pinning></igx-grid-toolbar-pinning>