3465 dashboard apply button disabled after first selection (SORMAS-Foundation#3632)

* SORMAS-Foundation#3465 - Apply custom filter button on Dashboard is disabled after one selection and doesn't get enabled when user makes an other selection

* SORMAS-Foundation#3465 - Apply custom filter button on Dashboard is disabled after one selection and doesn't get enabled when user makes an other selection

Author: sergiupacurariu

sormas-ui/src/main/java/de/symeda/sormas/ui/dashboard/DashboardFilterLayout.java

@@ -327,8 +327,6 @@ private HorizontalLayout createCustomDateFilterLayout() {
 		// Apply button listener
 		applyButton.addClickListener(e -> {
 			currentDateFilterType = DateFilterType.CUSTOM;
-			applyButton.setEnabled(false);
-			applyButton.removeStyleName(ValoTheme.BUTTON_PRIMARY);
 			DateFilterOption dateFilterOption = (DateFilterOption) weekAndDateFilter.getDateFilterOptionFilter().getValue();
 			Date fromDate = null;
 			Date toDate = null;