fix(platform): prevent filter input from losing focus when entering s…

…paces (#12367)

Co-authored-by: Mike O'Donnell <[email protected]>

libs/platform/table/components/table-cell-header-popover/table-cell-header-popover.component.html

@@ -100,6 +100,7 @@
                     fd-form-control
                     [id]="'fdp-table-column-filtering-' + column.name"
                     (keydown.enter)="_setColumnHeaderFilterBy(column.key, $any($event.target)?.value)"
+                    (keydown)="$event.stopPropagation()"
                 />
             </div>
         </div>