[player] Fix grid options to respect the new format

projects/player/src/app/components/section/section.component.html

@@ -32,9 +32,13 @@
           [style.margin-top.px]="element.position.marginTop"
           [style.margin-bottom.px]="element.position.marginBottom"
           [style.grid-column-start]="element.position.gridColumn"
-          [style.grid-column-end]="element.position.gridColumn + element.position.gridColumnRange"
+          [style.grid-column-end]="element.position.gridColumn ?
+            element.position.gridColumn + element.position.gridColumnRange:
+            null"
           [style.grid-row-start]="element.position.gridRow"
-          [style.grid-row-end]="element.position.gridRow + element.position.gridRowRange"
+          [style.grid-row-end]="element.position.gridRow ?
+            element.position.gridRow + element.position.gridRowRange:
+            null"
           [style.z-index]="element.position?.zIndex"
           [elementModel]="element"
           [pageIndex]="pageIndex">