fix(igxPivot): Apply rowHeight explicitly to rows so that they render with expected height even when empty.

Author: MKirova

projects/igniteui-angular/src/lib/grids/pivot-grid/pivot-grid.component.html

@@ -62,7 +62,7 @@
             </ng-template>
         </ng-template>
         <ng-template #record_template let-rowIndex="index" let-rowData>
-            <igx-pivot-row [pivotRowWidths]='pivotRowWidths' [gridID]="id" [index]="rowIndex" [data]="rowData" 
+            <igx-pivot-row [style.min-height.px]="rowHeight" [pivotRowWidths]='pivotRowWidths' [gridID]="id" [index]="rowIndex" [data]="rowData" 
             [ngClass]="rowClasses | igxGridRowClasses:row:row.inEditMode:row.selected:row.dirty:row.deleted:row.dragging:rowIndex:hasColumnLayouts:false:pipeTrigger"
             [ngStyle]="rowStyles | igxGridRowStyles:rowData:rowIndex:pipeTrigger" #row>
             </igx-pivot-row>