fix(grid height): add height to grid and parent

Author: multignite

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

@@ -2,7 +2,12 @@
     width: 100%;
 }
 
+:host {
+    height: 110vh;
+}
+
 .grid__wrapper {
-    margin: 0 auto;
+    margin: 0 auto 4rem;
     padding: 16px;
+    height: 100%;
 }